Class Notes: Density, Temperature, and Percent Error.

Slides:

Advertisements

Similar presentations

Thermal Energy and Temperature

Advertisements

What is density? Density is Mass Volume How to calculate density: DENSITY =MASS VOLUME The units of density are:

Notes on. Energy Is the capacity to do work or to produce heat Forms: Kinetic energy = energy of motion Potential energy = energy of position Thermal.

1 Chapter 1 Matter, Measurements, & Calculations 1.6 cont’ Temperature Conversions Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

Bell work The temperature of boiling water is 100° on the Celsius scale and 212° on the Fahrenheit scale. Look at each of the following temperatures and.

16.1: Thermal Energy and Matter. Heat Heat is the transfer of thermal energy from one object to another because of a temperature difference. Heat flows.

Scientific Measurement

Kinetic Energy and Kelvin Temperature BY: MELVIN G. FLORES East Gadsden High School.

Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 2 Matter.

Scientific Measurement

Heat and TemperatureSection 2 Temperature & Energy Transfer Chapter 14.1 & 14.2.

Characteristic Physical Properties

International System of Units  Units provide a scale on which to represent the results of a measurement.

Heat and TemperatureSection 1 SPS7.c Determine the heat capacity of a substance using mass, specific heat, and temperature.

Chapter 1 Lesson 3 (cont.) “How to Use the S.I. System”

1 Chapter 3 Matter and Energy 3.3Temperature Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings.

Fahrenheit, Celsius & Kelvin. Temperature  Is a measure of how hot or cold an object is compared to another object.  Indicates that heat flows from.

Temperature Scales Fahrenheit, Celsius & Kelvin. Temperature  Is a measure of how hot or cold an object is compared to another object.  Indicates that.

Unit 1: Measurement. Matter Everything is made of _________ Matter is described as anything that has volume and mass. ______________ is the amount of.

Chapter 3.2 Vocabulary International System of Units (SI) Meter Liter Kilogram Gram.

Lesson 5: Temperature and Density. Heat A form of energy that can move from a hot place to a cooler place.

Pre-AP Chemistry Chapter 2 “Measurements and Calculations”

NOTES-Chapter 12 Thermal Energy. Heat is defined and expressed by the Kinetic Molecular Theory of heat.

Heat A Form of Energy Molecules and Motion The _____of molecules produces _____ The _____motion, the _____heat is generated.

Chapter 3 Scientific Measurement Measurement In chemistry, #’s are either very small or very large 1 gram of hydrogen = 602,000,000,000,000,000,000,000.

Matter And Measurement Chemistry: The study of matter and the changes it undergoes.

Density & Temperature Unit 1: Measurement & matter Aim: What determines the density of a substance?

Thermal Energy Heat & Temperature. Definitions  Energy  Can do work  Kinetic Energy  Energy associated with the motion of objects, large or small.

1-3: Measurement What do scientists use to measure length, mass, volume, density, time, and temperature?

Comparing Temperature Scales Units of Temperature Fahrenheit scale 0 F Celsius scale commonly used by scientists water boils at C 0 K coldest temperature.

CHAPTER 3 NOTES Scientific Measurement. Measurement Qualitative measurements give results in descriptive, nonnumeric form. (Red balloon, tiny animal)

Chapter 1 Matter and Measurement Chemistry I, Honors Mr. von Werder WLHS.

General, Organic, and Biological ChemistryCopyright © 2010 Pearson Education, Inc.1 Energy and Matter Temperature.

When Thermal Energy is transferred it is called HEAT Heat always transfers from higher to lower In order to have flow there must be a temperature (thermal.

Temperature and Heat. Kinetic theory of matter What is Kinetic Energy? The energy of motion. What is Matter? The combination of particles in a substance.

Heat Molecules and Motion The motion of molecules produces heat The motion of molecules produces heat The more motion, the more heat is generated The.

Temperature How Hot is it?. Temperature Temperature is a measure of the average kinetic energy of a molecule of a substance, or… How “hot” it is. On Temperature.

Accuracy, Precision, and Error  It is necessary to make good, reliable measurements in the lab  Accuracy – how close a measurement is to the true value.

International System of Units  Units provide a scale on which to represent the results of a measurement.

Matter And Measurement Chapter 1 Introduction: Matter and Measurement.

Temperature vs. Heat. Thermal Energy The total potential and kinetic energy of the particles in a system make up thermal energy. The kinetic energy comes.

DENSITY and TEMPERATURE It’s time to get at that work.

Temperature Feeling hot, hot, hot….. Temperature Temperature – a measurement of how much kinetic energy the particles contain.

Heat The motion of the particles of matter. Heat Transfer Heat flows from an area of high heat to an area low in heat. Heat flows from an area of high.

General, Organic, and Biological ChemistryCopyright © 2010 Pearson Education, Inc. 2/22/3 ■Label this diagram 1.

Obj. 1.4 to 1.6.  A.) Metric System 1.) All SI units (notes from Table 1.4)  B.) Selected Prefixes you should know 1.) Table 1.5  C.) Length and Mass.

© 2012 Pearson Education, Inc. Units of Measurement.

Measurement Vocab. Measurement: a quantity that has both a number and a unit Measuring: a description of your observation.

General, Organic, and Biological ChemistryCopyright © 2010 Pearson Education, Inc.1 Temperature.

Temperature Conversions. Temperature Particles are always moving. When you heat water, the water molecules move faster. When molecules move faster, the.

Heat and TemperatureSection 1 EQ: 〉 What does temperature have to do with energy?

Temperature Temperature Temperature- a measure of a substances average kinetic energy. 1. hot particles will have more kinetic energy than cool.

Heat and TemperatureSection 1 Temperature and Energy 〉 What does temperature have to do with energy? 〉 The temperature of a substance is proportional to.

Accuracy of Measurements accepted value: true or correct value based on reliable source experimental value: measured by you during the experiment.

The Importance of Measurement

Topic: Math Topics Do now: 1

Chapter 3 Ultimate Review!

Density and Temperature

Measurements and Calculations

Chapter 2 Energy and Matter

Temperature and Heat Unit 6: Thermal Energy.

Ch 2 Matter and Energy When ice melts- what happens to its chemical composition?? Name a source of energy for your body. Name some temperature scales.

Metric System Prefixes convert the base units into units that are appropriate for the item being measured.

Bell work The temperature of boiling water is 100° on the Celsius scale and 212° on the Fahrenheit scale. Look at each of the following temperatures and.

MEASUREMENT AND PROBLEM SOLVING

Chemistry Chapter 3 Scientific Measurement

Temperature faster hotter goes up Particles are always moving.

Chapter 3: Measurement: Density

Temperature and Thermal Energy

Scientific Measurement

Presentation transcript:

Class Notes: Density, Temperature, and Percent Error

Density = = = = Density: A physical property used to compare substances Less dense substances float, more dense substances sink Mass Volume mvmv g cm 3 g mL

Temperature: the degree of hotness or coldness relative to water -A measure of the KE of particles Heat: a form of energy; can be transferred between objects *differences in temperature indicate the direction of heat transfer

Measuring Temperature – 2 scales 1.Celsius (°C) 2.Kelvin (K, no degree °) -Based on absolute zero (motion of particles ceases) -water freezes at 273K and boils at 373K K = °C K – 273 = °C

Percent Error Accuracy: nearness to the true (accepted) Value Experimental value: the one you measured Error = accepted value – experimental value Accepted Value x100

5 Steps to foolproof problem solving with formulas 1.Write the formula 2.List the variables 3.Rearrange the formula to solve for the unknown 4.Plug in numbers, calculate answer 5.Check (reasonable?, unit, box around answer)