# Objective Identify & analyze properties & changes in matter by using worksheets demonstrations, notes and collaboration. Main Ideas 1. Physical Property.

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Objective Identify & analyze properties & changes in matter by using worksheets demonstrations, notes and collaboration. Main Ideas 1. Physical Property 2. Physical Change 3. Density 4. Chemical Property 5. Chemical Change Physical & Chemical Properties of Matter IAN pg. 27

I. Matter has properties A. Physical Property: Characteristic of a substance used to identify it including: Taste, Odor, Ductile, Malleable, Volume, Color, Shape, Texture, Magnetic, Melting Point, Boiling Point, Freezing Point Density,

1. Density is the amount of mass a substance has in a given volume. (Physical Property) a. Formula(s) Include in your glossary! M VD ÷ X SO…… 1. D = M/V 2. M = DxV 3. V = M/D

Remember… You have to love Density Density = But… It will break your heart Density = Density = M v

Top ½ IAN PAGE 26 DENSITY CALCULATIONS

1. EX. A 5 cm 3 glass of water weighs 13 grams. What is it’s density? 13 grams. What is it’s density? D=m/v D= 13g/5cm 3 D= 2.6 g/cm 3 (Step 1) (Step 2) (Step 3) 2. EX. A 13 gram glass of water has a density of 2.6 g/cm 3. What is it’s density of 2.6 g/cm 3. What is it’s volume? volume? V=M/D V=13 g/2.6g/cm 3 V=5 cm 3

3. EX. A glass of water has a density of 2.6 g/cm 3 and a volume of of 2.6 g/cm 3 and a volume of 5 cm 3. What is it’s mass? 5 cm 3. What is it’s mass? M=DVM=2.6g/cm 3 x 5 cm 3 M=13 g

2. Physical Change: A change that does not alter the identity of a substance. a. What you start with is what you end with! what you end with! EX. Ice (Solid) Water (Liquid) H 2 O H 2 O Breaking a stick Tearing a Piece of Paper

3. Changes in state/phase of matter are physical changes.

I. Chemical Properties & Changes A. Chemical Properties Describes how substances can form new substances Including: Combustibility (How well it burns), Oxidation (Rusting, Tarnishing), Reactivity, pH (Percent H + )

B. Chemical Change: Changing one substance into another substance by rearranging atoms to form something NEW! NEW! 1. Evidence of chemical change: bubbles, odor, color change, temperature change, solid forms = Precipitate Ex. Burning, Rusting, Digestion, Cooking

ELEPHANT TOOTHPASTE KI + H 2 O 2 H 2 O + O 2 + K - + I + KI H 2 O 2 + Soap Bottom ½ IAN pg. 26 50 ml20 ml

ELEPHANT TOOTHPASTE OBSERVATIONS Quantitative Qualitative Observations that indicate a Chemical Reaction has occurred: 1. H 2 O 2 (Hydrogen Peroxide) 50 mL 2. KI (Potassium Iodide) 20 mL 3. Dish Soap 2-5 mL 1. 2. 3. 4. BOTTOM ½ IAN pg. 26

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