Presentation on theme: "WHAT’S NEW? MP2 Notebooks – if you earned a 90 or above, you do not have to turn a notebook in again Periodic Table of Elements – Need to memorize and."— Presentation transcript:
1 WHAT’S NEW? MP2Notebooks – if you earned a 90 or above, you do not have to turn a notebook in againPeriodic Table of Elements – Need to memorize and recite the First 20 for a quiz gradeKeep a classwork/worksheet log in your notebooks
2 Matter has PROPERTIESPROPERTY – A characteristic of a substance that helps identify what the substance is. There are two kinds of properties:a. Physical Properties –b. Chemical PropertiesWhat properties doesThis liquid have?
3 Matter Has Physical Properties Physical properties can be observed without changing the substance.A physical property isBrittleness (how easily does it break?)boiling pointColorDensity (m/v)Malleability (ability to be pounded into different shapes)Solubility (the ability to dissolve into another substance)Conductivity (does it conduct heat or electricity?)FlexibilityHardnessmassmelting point, freezing point, condensation point,Volumeelectric propertiesmagnetic propertiesSolid, liquid or gaseAdaptive Curriculum – Separation of MixturesCombine some iron filings with cereal and have students separate this mixture.Adaptive curriculum – heating properties of different pans.
4 Physical Properties Brittleness (how easily does it break?) A physical property isBrittleness (how easily does it break?)boiling pointColorDensity (m/v)Malleability (ability to be pounded into different shapes)Solubility (the ability to dissolve into another substance)Conductivity (does it conduct heat or electricity?)FlexibilityHardnessmassmelting point, freezing point, condensation point,Volumeelectric propertiesmagnetic propertiesState of matter (whether it’s a solid, liquid or gas)
5 Physical PropertiesQuantitative – Properties that can be measured. (mass, volume, length, etc.)Qualitative – Properties that are perceived by the five senses (taste, touch, smell, sight, sound)
6 Are the following properties Qualitative or Quantitive? The gold bar is 3 dm long and has a mass of 200 kgThe gold bar is shinyThe gold bar is heavyThe gold bar has a volume of 1,000 ml
7 Matter has Chemical Properties A characteristic of a substance that can be seen during a chemical reaction.Flammability (does it catch fire?)Reactivity with water or other substances (volatility)Chemical stability in a given environment (is it explosive?) (Combustibility)Acid or Base?
8 Warm-up 1. Please take out your homework – we will be collecting it. Please use your notes on quantitative and qualitative observations to complete the warm-up
13 Change of State is a Physical Change Can a change from solid to liquid to gas be reversed?Yes!
14 Dissolving sugar in water is ??? Physical change – why?The sugar has not changed, it’s properties remain the sameCan be separated by evaporation or distillationMixing Oil and Water is ????Physical Change – why?-- the oil and vinegar can be separated and their properties have not changed
15 Chemical ChangesOccurs when one or more substances are changed into entirely new substances with different propertiesEvidence of a chemical change:Color changeFizzing or foamingHeatProduction of sound, light, odor
16 Warm-upWhen ice melts, does the temperature go up, go down or stay the same?If a jar has a mass of 120g and a volume of 25 ml, what is the density?Describe two chemical properties of matterDescribe to physical properties of matterIn a recycling plant, how do you think they use physical properties to separate plastics from newspapers?
18 Matter – Chemical Changes Elephant Toothpaste.What evidence do you have that a chemical reaction took place?
19 Can chemical changes be undone? Most Chemical changes cannot be reversed because new substances have been formedAcid Rain is an example of a chemical change.When coal is burned it produces sulfur, combined with water in the atmosphere sulfuric acid is produced.
20 Matter – Property Changes If the size, shape, or form of matter changes it is a physical change.Physical weathering is a type of physical change.Rusting is a chemical change because the substance – iron (Fe) is changed into a new substance – Rust (Fe203)Play song – Don’t Change by GooGoo Dolls.PSA – Two Ways to Change Wrksht.
21 Let’s go overWay to change worksheetStudy Guide
22 Matter Can Change Physical Change Chemical Change Physical properties (size, shape, etc) of a substance change. The elements or compounds are not altered.Chemical ChangeAtomic bonds arebrokenNew atomic bondsare formedThe substance does NOThave the properties it oncedid.We can physically change the copper by mixing it with tin. Chemically changing the copper would require a reaction with something like water or acid rain to make it tarnish.
23 Test – next Thursday Pages in the book: Section B, Chapter 4, pp and ppSection A, Chapter 2, ppConceptsPhysical properties, chemical properties, elements, mixtures, solutions
24 Elements, Mixtures, Compounds You should be able to tell the difference!Brainpop – mixtures compounds
25 Elements are pure substances All atoms on the periodic table are elementsSubstances that are made of only one kind of atom are ELEMENTSExamples include
26 CompoundsAre the result of a chemical change. In a compound, bonds are broken and a completely new substance is made.Compounds are represented by chemical formulas. (H2O, C6H12O6)