Ppt on physical and chemical changes for class 6

Matter Class #3 OB: Principles of separating mixtures, counting atoms in chemical formulas, and the indicators of chemical reactions.

Fe + 3 O 6 total = K + 1 H + 1 C + 3 O 5 total = 1 Ca + O + H and O + H again 29 = 2 Al + 2 Cr + 7 O and 2 Cr + 7 O and 2 Cr + 7/. Since they are just physically mixed, you should be able to separate them with just physical means (not chemical). For instance, to separate the mixture of sand and water, you could filter /– temperature change… if the stuff you are playing with changes temperatures (by itself, not a fridge or a Bunsen burner) a chemical reaction has probably happened. O – odor change… if the/

Chapter 6 Sedimentary rocks. Classification of Sedimentary Rocks 1) Clastic 2) Chemical 3) Organic Sedimentary rocks usually originate in water environments,

resources Coal è major fuel for power plants è 70% of coal usage: electricity è many problems: pollution, health, wastelands è lots more available è formation: swamps Sample Problem Citing two differences, compare clastic and chemical sedimentary rocks. Answer: Sediment is formed by different processes. Sediment that forms clastic rocks are weathered by a physical weathering, whereas, sediment that forms chemical rocks are produced by chemical weathering. Clastic rocks are generally/

Chapter 2: Types of Evidence “You can learn a lot by just watching.” —Yogi Berra, former New York Yankees catcher and sage.

properties  PhysicalChemical  Structural  Biological  Immunological 4. Comparison—class characteristics are measured against those of known standards or controls; if all measurements are equal, then the two samples may be considered to have come from the same source or origin. Chapter 2 Kendall/Hunt Publishing Company 22 Investigations 5. Individualization—demonstrating that the sample is unique, even among members of the same class 6. Interpretation/

2/24/12 OBJECTIVE: Students will identify physical and chemical properties. WARM-UP: Identify 5 common elements. HOMEWORK: None.

2/24/12 OBJECTIVE: Students will identify physical and chemical properties. WARM-UP: Identify 5 common elements. HOMEWORK: None. Chemical and Physical Properties 1. Physical Property Any characteristic of a material that can be observed or measured without changing the composition of the substances in the material. Any characteristic of a material that can be observed or measured without changing the composition of the substances in the material. 2. Examples/

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Rocks Chapter 6 Table of Contents Section 1 Rocks and the Rock Cycle.

of rock forms when heat, pressure, and chemical processes change the physical properties of igneous rock? Standardized Test Prep Chapter 6 Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Short Response, continued 7. What type of rock forms when heat, pressure, and chemical processes change the physical properties of igneous rock? metamorphic rock Standardized Test Prep Chapter 6 Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu/

Md. Faysal Ahamed Khan Welcome to the class of Chemistry I Course No. CHEM 211 Credit hours 3.

economies. 5. It is required for virtually every major involving science or engineering. 6. An awareness of the principles of chemistry is essential to being an informed and responsible citizen in a highly technical society. 7. It is incredibly fascinating and a lot of fun! Chemistry is the study of the properties, composition, and structure of matter, the physical and chemical changes it undergoes, and the energy associated (liberated or/

Thermochemistry Energy Heat Thermochemical Equations Calculating Enthalpy Change Reaction Sponteneity.

the heat change for chemical and physical processes. Enthalpy (H) - the heat content for systems at a constant pressure. – Heat and enthalpy are the same thing. - Q = H Thermal Energy Equation Q = m x c x T Q = heat (enthalpy) or( H) (J) m = mass (g) c = specific heat (J/g x 0 C) T = final temp. – initial temp. ( 0 C) Example 2 (pg. 271) In-class assignment/

Welcome to Physics 498Bio Understanding biology using “simple” ideas from physics. Your host: Professor Paul Selvin Office: 365 Loomis Office Hr: after.

% on oral report: 8-12 min plus 4 min for questions. 15% on midterm exam 15% on final exam 10% Quizzes (1% on each) --5 min quizzes making sure that you’ve read readings 10% on classroom participation /class evaluation Grading (may be modified slightly if changes to course ) Yes, you get to evaluate class! Three (or 4) questions: 1. What was the most/

Mott physics in organic charge-transfer salts Michael Lang J.W. Goethe-Universität Frankfurt Temperature Pressure Mott insulator AF order superconductor.

physics/form for the Gibbs free energy for the 2D Ising universality class: ss (T 0,p 0 )  large  (T) anomaly + sign change expected  Scaling for 2D Ising universality class / with a 2D Ising universality class Hard X-ray photoemission spectroscopy 1.6 nm UPS 0.5 nm /1 HOMO Ligand state B A Instanteneous rearrangements of electrons in HOMO and HOMO-1 (incl. ligand) states required energy  lowering of the/13.5K T* = 30.1K Evolution of T* anomaly with chemical pressure D8-Br A2907#1D8-Br A2995#3 T c = 11K/

Weathering, Erosion, & Deposition part 1 Part I. Weathering A.Weathering is the physical or chemical break- down of rocks or minerals at or near the.

Physical – breaking rocks w/o changing composition B.Chemical – breaking rocks by chemically changing the minerals Chemical Weathering Agents A.Water – dissolves certain rocks (salt) B.Air a)Oxidation (rusting) – O 2 combines w/ water and/physical SOILS Soils are a mixture of rocks, minerals and organic material Soil A.Final product of weathering B.Soil composition 1.Inorganic material – pieces of weathered rock 2.Humus – organic material from decayed plants and animals; provides nutrients for growth Classes/

Chemical Changes and Density October 15, 2013 Ms. Smith Mrs. Malone Ms. Cedillo DO NOW: Date: October 15, 2013 6.8B calculate density to identify an unknown.

class Chemical Changes and Density October 18, 2013 DO NOW: Date: October 18, 2013 6.5 D identify the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change. 6.6B calculate density to identify an unknown substance 1.Put your CB on your desk 2.Turn in your Physical/have lab data and are ready to present Ms. Smith Mrs. Malone Ms. Cedillo Safety Warning October 15, 2013 : For your safety: /

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Rocks and the Rock Cycle Chapter 6 Objectives Identify.

. All rights reserved. ResourcesChapter menu Section 1 Rocks and the Rock Cycle Chapter 6 The Rock Cycle, continued The diagram below shows the rock cycle. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Rocks and the Rock Cycle Chapter 6 Properties of Rocks All rock has physical and chemical properties that are determined by how and where the rock formed. The rate at which/

Lengthy Definition: Chemistry is the branch of science that uses observations and the scientific method to deal with the identification of the pure substances.

, or inconsistent Definition Page 5.Mean: the average value among data 6.Median: the central data point 7.Mode: the data point that repeats/ area is proportional to the frequency of a variable and whose width is equal to the class interval. 9.Pie Chart: a type of graph/change, a chemical reaction might also involve a color change, the release of gas or the formation of a solid. Changes in Matter All physical and chemical changes involve a change in energy. Energy is the ability to do work or produce heat. For/

Introduction to the new GCSE Science course Copyright © AQA and its licensors. All rights reserved. Higher Tier Foundation Tier Same tier.

. Energy changes Copyright © AQA and its licensors. All rights reserved. 15. Chemical analysis 16. Chemistry of the atmosphere 17. Using resources Within some units there is some exclusive separate science (chemistry only) content. 4. Atomic structure 7. Magnetism and electromagnetism 1. Energy 6. Waves 5. Forces 2. Electricity 3. Particle model of matter Copyright © AQA and its licensors. All rights reserved. 8. Space physics Space physics is only/

What is Matter?.

and properties of matter and the changes that matter undergoes MATTER- anything that has mass and take up space Ex of matter: (class will give examples and write them down) Light and sound are matter? Why? ELEMENT- a substance that cannot be separated or broken down into simpler substances by chemical/ keeps all of the physical and chemical proprieties of that substance (the smallest unit of a substance that behaves like a substance) A water molecule is made of two hydrogen and one oxygen atom Most molecules/

Periodic Table of Elements

Soft Shiny One valance: electron makes them very reactive. The Sodium in the class demo reacted so violently because it has… 30 3 protons 1 neutron 2 /and melanin is produced) Both physical and chemical change 5 Chemical change only Physical change only Both physical and chemical change Both physical and chemical change 5 Chemical change only Physical change only Both physical and chemical change He, O2, N2, and Ne are all: 5 Atoms Elements Compounds 5 Atoms Elements Compounds/molecules H2, H2O, N2, and/

Changes in Matter Lessons

plan inquiry-based physical and chemical change lessons and to present these lessons to their students. The teacher slides give you an overview of the lesson, ideas for teaching each section of the lesson, and hints for facilitating the hands-on portions of the lesson. The student slides are intended to be projected and/or printed and used by small groups during stations, investigations, or class discussions. Changes in Matter Physical Changes Teacher Slides/

Hazard Communication 2012 & Right-To-Know

NYS PESH Training and Education Hazardous Chemical Any chemical which is classified as a physical hazard or a health hazard Also includes: Simple asphyxiants Combustible dusts Pyrophoric gases Hazards not otherwise classified Hazard Classification Hazard Class and Category (Severity), where appropriate Identify and consider full range of available scientific literature and other evidence concerning potential hazards including mixtures Appendix A for Health Hazards Appendix B for Physical Hazards Appendix B/

Why do you think we have to learn about Chemistry in a Biology class?

in a Biology class? A Brief /physically mix together or can chemically combine to form compounds. Chemical reactions occur when: atoms are separated, joined or rearranged; however, they are never changed/sun” This did not account for very specific traits that atoms possessed. Atomic Structure Protons and Neutrons make up the nucleus/. Perhaps we will change the way you think about yourself. Bonding and Chemical Reactions Chemical Bonding: Combining Atoms of Elements to form Chemical Compounds Oh, you can/

Read each statement and identify it as an example of a physical or chemical change. 1.Chopping wood 2.Dissolving salt in water 3.Cooking egg white 4.A.

6.Jewelry tarnishes Think back to middle school physical science class Write a definition of a physical and a chemical change. Illustrate how old substances become new substances. Old substances are called reactants. New substances are called products. A chemical reaction uses an arrow to indicate the change. It is read as ‘yields’. Chemical/ indicate a chemical reaction? 5.What part of the chemical reaction is missing from equation #1 in Write the chemical equation for photosynthesis. 6.the objective /

BELL RINGER Explain, in terms of particles and energy, the different states of matter.

The density of mercury is 13.6 g/ml. __________ The solubility of sodium chloride in water is 40g/100 ml of water. Physical vs. Chemical Chemical Changes - Mythbusters Mentos Rocket Sugar and sulfuric acid – Penny and Nitric Acid Flour with syringe Sugar and sulfuric acid – Half fill /rate, starting below its melting point. What is the heat of vaporization and along which line on the graph is it measured? Heat Problems Problem #3 back of sheet from last class 100 ° C 0 ° C Analysis By Separation Lab   X 100%/

Unit 1- Mass and Change What could we have measured?

6: Chemical properties that change the make-up of a substance (only evident at the particle level). Change – Key Concept 7: Physical change- the original substance still exists (its particles are still the same); it has simply changed form. – Key Concept 8: Chemical change- takes place on the molecular level and produces a new substance (chemical changes are accompanied by physical changes). Stage Examples Physical PropertyChemical Property Physical ChangeChemical Change Salt Exit Pass: Physical or Chemical/

Chapter 2 Types of Evidence Kendall/Hunt.

unique source for the evidence. You will be able to: Explain the difference between indirect and direct evidence. Describe what is meant by physical evidence and give examples. Distinguish individual evidence from class evidence. Determine the significance of class evidence. Kendall/crime scene with a sample of known origin. Kendall/Hunt Types of Physical Evidence Chapter 2 Types of Physical Evidence Transient evidence is temporary; easily changed or lost; usually observed by the first officer at the scene. /

Hazard Communication (HazComm2012) and the Globally Harmonized System (GHS) Mark Banden Compliance Assistance Specialist OSHA, Kansas City Area Office.

changes to the Hazard Communication Standard Hazard classification: Provides specific criteria for classification of health and physical hazards, as well as classification of mixtures. Labels: Chemical manufacturers and importers will be required to provide a label that includes a harmonized signal word, pictogram, and hazard statement for each hazard class and/ 4. Respiratory or skin sensitization 5. Germ cell mutagenicity 6. Carcinogenicity 7. Reproductive toxicity 8. Specific target organ toxicity/

Energy Physical Science.

is released. Examples: Digesting food…bonds are broken to release energy for your body to store and use. Sports… your body uses energy stored in your muscles obtained from food. Green plant Fire–a chemical change. Remind students of video of the sodium metal in water – produced fire – Chemical Change… Sodium metal reacts with water. Electromagnetic Energy Energy that results from the flow of moving charges/

TODAY’S GOALS (8/20/14)  1. Attendance  2. Review and collect signed parent letter, classroom rules, and safety contract  3. Safety Power Point  Homework:

 2. Stamp in Physical and Chemical Changes Lab Part 2  3. Copper to Gold Lab  4. Review Physical and Chemical Changes Lab Parts 1 and 2  Homework:  Copper to Gold Lab Questions TODAY’S GOALS (9/29/14)  1. Attendance and WPR  2. Stamp in Copper to Gold Lab  3. Review Physical and Chemical Changes Lab Part 1 and 2, Physical and Chemical Changes Worksheet and Copper to Gold Lab  4. ECM Test Review  Homework:  Study for Test on Wednesday TODAY/

Unit 1 The Science of Chemistry and Matter. What is Chemistry? POD: Discuss with the person next to you different ways you think chemistry is present.

the class how you would classify the sample and why. (Don’t use water as an example, too easy!!) Changes in matter 1. Identify properties as extensive or intensive. 2. Define a physical property and a chemical property. 3. Describe a physical change. 4. Describe what happens during a chemical change. 5. Identify clues that a chemical change has taken place. Changes in matter Physical change : same substance remains after change. Ex. Pounding, cutting, dissolving Changes of/

Unit 1 The Science of Chemistry and Matter. What is Chemistry? Discuss with the person next to you different ways you think chemistry is present in your.

study of the composition of matter and the changes matter undergoes. Matter: anything that has mass and occupies space. There are five traditional areas of study for chemistry Organic chemistry: study of chemicals containing carbon. Inorganic chemistry: study of chemicals that do not contain carbon. Biochemistry: study of processes that take place in organisms. Analytical chemistry: focuses on composition of matter Physical chemistry: describes behaviors of chemistry/

Agricultural Land Rating Systems... for the Non-Soil Scientist Earl Yamamoto, State Department of Agriculture February 5, 2000 Advance slide 

classes of important agricultural lands Prime – Soils with best physical, chemical, & climatic properties for mechanized field crops – Excludes built-up land/urban, water bodies Unique – Land other than prime for/for topography, climate Vary in consideration of other attributes like crop yield  Limitations to agricultural productivity considered in some form Mostly physical and/has limitations in application-- none ideal 2. Ratings change with change in conditions or opportunities Advance slide  Closing /

Harvard Science Libraries: Management Issues By Michael R. Leach Director, Physics Research Library & Head of Collection Development Cabot Science Library.

–Molecular & Cellular Biology –Chemistry & Chemical Biology –Organismic & Evolutionary Biology –Botany –Engineering & Applied Sciences –Physics –Astrophysics –Anthropology (part of Harvard/for Preservation July 2005Copyright 2005 Harvard University14 Non-traditional Formats Cartographic collections Cartographic collections –Traditionally not well supported –GIS is changing/class instruction –Specialized instruction  E.g. Endnote training in department space –Realization that “you offer classes at library and/

Physics 564 – Particle Physics Matthew Jones - Phys 378 Office hours: after class or by appointment Web page:

class or by appointment Web page: http://www.physics.purdue.edu/~mjones/phys564 Should contain: –Course outline, nominal schedule –Lecture notes –Assignments –Supplementary material (long derivations) –Computing instructions and/: 70% assignments, 30% final project Assignments: –Plan for about 6 assignments –Some computing component to assignments –Free to use / the material through which they move. The ions produce chemical or physical changes in the material. –Photographic emulsion –Cloud chamber –Bubble/

Work & Energy "There is nothing new to be discovered in physics now, All that remains is more and more precise measurement.” -Lord Kelvin “Time is nature’s.

her Kinetic Energy? Her mass was 60 kg and height 5’ 6’’ Florence Griffith-Joyner (born Delorez Griffith) sprints /meters/sec2. Last class we showed that /contained in matter is the reason for the power of nuclear bombs,/change with time. The total amount of energy never changes, it only moves from place to place and from one form to another. Conservation of Energy applies not just to kinetic and potential energy, as in the example, but to all kinds of energy (heat, chemical, …) Conservation Laws in Physics/

New Unit Energy and Reactions. 1. Energy What is energy? Energy = ability to do work What is work? Work = TRANSFER of energy from one object to another.

to another. 1. Energy In this class: changes in bond energy in reactions and physical changes 1. Energy 1. Explain the conservation of energy 2. Why might a one-step energy conversion be preferred over a two-step conversion? 2. Physical vs Chemical Changes 2. Physical Changes and Reactions How is a physical change different from a chemical change? PhysicalChemical Example: Changing outfitsChanging DNA 2. Physical Changes and Reactions Signs of a chemical change 1. Evolution of a gas 2. Formation/

Words to Study for Chem. Test Mass Weight Matter Physical Properties Chemical Properties Characteristic Properties Physical Changes Chemical Changes Signs.

– H 2 0 – C 6 H 12 O 6 Coefficients A number that is placed in front of a chemical symbol or formula Tells how many molecules of that substance are present Keeps reaction balanced Example 2H 2 + O 2  2H 2 O Law of Conservation of Mass Mass is neither created nor destroyed in ordinary chemical and physical changes Must start and end with the same amount/

SCI 230: Module I Carbon, Life, and Cycling Module I: Learning Goals & Objectives Part A Goal: Students will understand that carbon atoms form the backbone.

B: The Carbon Cycle Class discussion: C – cycle / or Take-home assignment: (For details, see next slide)/physical and chemical changes. (Physical Sciences) Organize and evaluate observations, measurements, and other data to formulate inferences and conclusions. (Scientific Inquiry) Use results and data from investigations to provide the evidence to support explanations and conclusions. (Scientific Inquiry) Related Ohio Academic Science Standards 6 - 8 Science Benchmarks Describe interactions of matter and/

1º ESO UNIT 4: Chemical and physical changes Susana Morales Bernal.

for them. Objectives Susana Morales Bernal Matter can undergo transformations that can be physical or chemical Physical changes and chemical changes Physical changes: those in which the substances continue being the same ones Chemical changes: those in which the substances that there are at the beginning disappear and in their place appear new ones The changes of state and the processes of dissolution of the substances are physical changes The combustions are chemical changes The chemical changes/

Warm up 6/8 Which three elements make up most of the mass of most biological molecules? Coming events: 6/8 Cell parts notes/ activities 6/11 Worktime cell.

Tues: Section 22.6 + Final work time to fix up/ build/ plan for final run of chemical car Wed: Final run of chemical car! Thurs/ Friday: Final write up of chemical car report + Begin /chemical reaction Reactants being mixed The chemical reaction in process Chemical equilibrium Physical Science Warm up 1/30 List 1 factor that affects reaction rate and explain how to change that factor to speed up a chemical reaction. Today’s planned events: Overview of syllabus Notes: Factors affecting reaction rate In-class/

Bellwork: Thursday 4/12/12 Take out Packet 10. Discuss your homework questions with students at your group. Be KIND to all ideas. We will share as a class.

and water (H 2 O). – 6.4- THE STUDENT WILL COMPARE AND CONTRAST MOLECULES AND COMPOUNDS. Physical and Chemical Changes are two basic ways that matter can change Think of elements as letters, and compounds as words: Physical Change – Printing the same word in a different type without changing the word Chemical Change/ignition is present. Differentiating between physical and chemical properties… hold up 1 finger for physical, 2 fingers for chemical 1. Physical Property2. Chemical Property The color of the /

Wednesday, October 31st AGENDA: 1 – Bell Ringer 2 – Homework Review 3 – Precision and Accuracy 4 – Chemical and Physical Changes Packet due tomorrow Today’s.

and chemical / physical changes. Homework 1. Classroom Materials (see p. 3) Homework 1. Classroom Materials – Bring classroom materials from page 3 by Thursday at the latest. I will not provide calculators or writing utensils for/ Examples You pay attention in class so you get a good grade on your quizzes. Examples You pay attention in class so you get a good /flows through Identify one thing that is held constant. Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of/

14 th Edition of APPA Safety Manual Safety Manual Review of Changes John H. Borowski, CIH, CSP April 22, 2008.

Chemical and Physical Hazard Control No Content Changes April 2008Page - 18 Section 4 – Personal Protective Equipment Section 402 - Eye and Face Protection (formerly Section 115) - Increased attention to particulates, use of protective eyewear and clarifies conditions for/Approach Distance as indicated in Table 6.1) of unprotected energized circuits or apparatus” Deleted – “not less/ wear head protection that conforms to ANSI Z89.1. Class E helmets shall be worn when working in proximity to/

Wednesday, October 14 Objective: Students will be able to apply the law of conservation of mass to reactions, contrast mixtures and substances. Quick.

and substance.  HOMEWORK: 1. Make vocab flashcards for the vocabulary from sections 3.2 and 3.3. Quiz: 1. Define physical change. 2. Describe a phase change and give one example using the water cycle. 3. Define chemical change/CO = 44 grams – 16 grams M CO = 28 grams Summary (finish for homework or in class if time permits) Cornell Notes Ms. Barkume 10/14 Law of Conservation of/sample of magnesium (Mg) reacts with oxygen (O 2 ) to form 16.6 grams of magnesium oxide (MgO). How many grams of oxygen reacted? 4./

Welcome to Physics 498Bio Understanding biology using “simple” ideas from physics. You must know enough biology to have a sense of what to study! Your.

class! (Do not be late.) 25% Mid-term Oral and written report Oral & Written—the same subject -- 12.5% on written report: 8 pg report. -- 12.5% on oral report: 10-12 min plus 3-5 min for questions. 25%: Final Written Project & Oral Project– Same / more like 280 ° K? What happened? Greenhouse Effect: 280°K (Homework) When you change the balance, you get REAL effects! Add CO 2, you get an artificial Greenhouse Effect Physics is about great laws Some examples… Newton’s 3 Laws (Mechanics) Isaac Newton 1642-1727/

QOD #41 Name one chemical PROPERTY and give an example of a chemical change that could happen because of that property. Name one physical PROPERTY and.

the front of the class. 3.Rinse off spoon with water and place in cup of spoons. QOD #42 Ms. Rathjen’s room is so cold that her bottle of water froze on her desk. If the mass of the water and bottle was 250 grams before the physical change, what was it after? The Law of Conservation of Mass (in a chemical change) - The mass stays/

DO NOW - Put each of the following examples of change into the correct column: 1. Water boiling 2. Curdling milk 3. Rust 4. Metal expanding 5. Burning.

. Burning wood 6. Glass breaking 7. Chocolate melting 8. Cooking an egg Physical ChangeChemical Change 12 43 56 78 Properties of Metals and Non-metals Miss Jan Recognising metals SLOs know the names of some common metals know the names of some common metals Locate the metals on the Periodic Table Locate the metals on the Periodic Table understand the difference between physical and chemical properties understand/

Who: You and Me (Mike Payne) Who: You and Me (Mike Payne) What: Chemistry 400 (General Chemistry I) What: Chemistry 400 (General Chemistry I) When: Tuesdays.

in class Follow along in class Ask questions!!! Ask questions!!! Respect for your fellow students Respect for your /physical and chemical properties. Property: A characteristic that can be used to describe a substance. Substances have both physical and chemical properties. A change in the properties of matter with time. There are physical changes and chemical changes. Transformations: A change in the properties of matter with time. There are physical changes and chemical changes. Anything that has mass and/

3-1 PRENTICE HALL ©2008 Pearson Education, Inc. Upper Saddle River, NJ 07458 FORENSIC SCIENCE An Introduction By Richard Saferstein PHYSICAL EVIDENCE Chapter.

By Richard Saferstein Examining Physical Evidence The examination of physical evidence is done for two reasons: identification or comparison. Identification determines the physical or chemical identity Comparison a suspect specimen and a standard/reference specimen /physical evidence is ultimately determined by the jury in court. 3-13 PRENTICE HALL ©2008 Pearson Education, Inc. Upper Saddle River, NJ 07458 FORENSIC SCIENCE An Introduction By Richard Saferstein Crossing Over Evidence that changes from class/

Physical Science Released SOL Items. According to the graph, which air pollutant decreased the most from 1970 to 1991? 1234567891011121314151617181920.

class of 25 conducts the same experiment. One student gathers all the data from her classmates and summarizes the results of the experiment for the class. She compares the data she personally recorded with the class/ 1234567891011121314151617181920 2122232425 A.A chemical change B.A temperature change C.A phase change D.A physical change This chart represents the type and number of items collected in/of the rock? 1234567891011121314151617181920 2122232425 A.335.6 g B.350.6 g C.354.6 g D.356.0 g The picture /

a. Distinguish between atoms and molecules. Protons- Positively charged Found in the nucleus Determines the type of element Electrons- Negatively charged.

the model which is the chemical formula for formaldehyde? A. H 2 C/physical and chemical properties of matter as physical (i.e., density, melting point, boiling point) or chemical (i.e., reactivity, combustibility). Physical Property—can be observed or measured without changing the matter’s identity Common Physical/and compounds B. Electrons and protons C. groups or families D. periods or rows Which class of elements best conducts electricity? A metals B nonmetals C metalloids 6 C 12.0 What does the number 6/

Rudy Vannevel Canada, Montreal 2-4.12.2002 FLEMISH ENVIRONMENT AGENCY A. Van de Maelestraat 96 B-9320 Erembodegem BELGIUM Methods and guidelines for the.

de Maelestraat 96 B-9320 Erembodegem BELGIUM Methods and guidelines for the rapid assessment of biological diversity of inland water ecosystems Methods and guidelines for the rapid assessment of biological diversity of inland / patterns, physical-chemical and biological parameters,... Impact reduction options, management options, sustainable exploitation of a sp.,... Indices, ecological changes, effects on habitat spp., health of water systems,... Identify threats to focal species and habitats D/

PHYSICAL AND CHEMICAL PROPERTIES AND CHANGES. Write down the answers to the following questions on a piece of notebook paper. This will be collected at.

the physical and chemical properties and changes of the substance  Make a table to record your answers YOU DO: IDENTIFY CHEMICAL AND PHYSICAL PROPERTIES AND CHANGES Classify the following as chemical change (cc), chemical property (cp), physical change (pc), or physical property (pp). Explain WHY for each answer. HOMEWORK # 2 1. Heat conductivity 2.Combustible 3.Silver tarnishing 4.Water freezing 5.Melting ice 6.Wood burning 7.Iron rusting 8.Density of a coin 9.Length of/

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