What s the Matter with Matter?

Transcription

1 What s the Matter with Matter?

2 Thinking about Matter Sort the following into two categories, matter and not matter. Peanut butter, water, fish, garbage, time, motion, the human brain, carbon dioxide gas, yourself, an idea, tree, energy. How did you distinguish between the categories?

3 What is Matter? Matter is anything that has mass and volume

4 What forms does matter come in? Solid Liquid Gas Plasma

5 States of Matter Solid has definite shape and definite volume. Solid animation - Ice

6 States of Matter Liquid has undefined shape but defined volume Liquid Animation - Water

7 States of Matter Gas has undefined shape and undefined volume. Gas Animation - Steam

8 States Of Matter Plasma very hot gasses undefined shape and volume only exist at high temperatures (i.e. the sun)

9 Physical Properties Characteristics of a substance that can be observed without altering the identity of the substance. State, density, color, odor, melting point, boiling point, luster, conductivity, brittleness, malleability. H2O_phases.exe

10 Chemical Properties Characteristics of a substance that cannot be observed without altering the identity of the substance. Reactivity, flammability, reaction types

11 Closure Draw pictures that represents a solid, a liquid, and a gas. Explain each drawing.

12 Physical and Chemical Changes Physical Changes Do not alter the identity of a substance Crushing, tearing, changes of state (solid to liquid to gas) Chemical Changes Alter the identity or chemistry of a substance Burning, cooking, rusting

13 Physical and Chemical Properties Consider a copper coin. Make a list of its chemical and physical properties. Consider these photos for clues. Cu and Nitric acid.mov

14 Practice Physical vs. Chemical Mg and HCl.MOV KBr Lattice.MOV Zn and S.MOV

15 Physical and Chemical Changes Is this a physical or a chemical change? Explain your reasoning.

16 Lab- Physical vs. Chemical Change Station Rotation How do you know a chemical change has occurred? What are the indicators?

17 Classification of Matter Laboratory Station Rotation Write down the Chemical Formula Name of substance Describe the appearance of the substance. Be very specific!!

18 Classification of Matter Laboratory Developing the classification scheme Look for patterns In formulas, names, appearance Be able to use your classification scheme to describe all of the substances you looked at. Remember to start broad and get more specific as you go through the chart.

19 Classification of Matter Matter Pure Substance Mixture Element Compound Heterogeneous Homogeneous

20 Classification of Matter

21 Pure Substance Elements Matter that can not be broken down into simpler substances under normal lab conditions Contains only one kind of atom Atom Molecule Elements (symbols) Na, Au, C Where can you find a list of all the elements?

22 Pure Substance Compounds Can be separated into elements + Composed of two or more elements that combine in a chemical reaction + Combine in a fixed proportion Examples NaCl, H 2 O, Fe(NO 3 ) 3

23 Which are elements and which are compounds?

24 Mixtures A blend of two or more pure substances Not chemically combined Granite

25 Mixtures Heterogeneous Mixture with visibly different parts. Sand + water Salt + Pepper M & M s

26 Mixtures Homogeneous Mixture with no visibly different parts. Sea water H 2 O + NaCl Air N 2 + O 2 + CO 2

27 Practice Classifying Matter Make a list of 3 things (and their parts) found in the classroom. Classify these as solid, liquid, or gas pure substances and mixtures homogeneous or heterogeneous elements or compounds Be prepared to share your classifications?

28 Classify mixtures pure substances elements compounds Draw a picture that represents a pure compound.

29 Classify Classify each of the following as, a homogenous or heterogeneous mixture, pure substance, element or compound, atom or molecule. 1. CH 4 2. KMnO 4 3. Co 4. Al + H 2 O Draw atomic level pictures of each substance.