1. Unit 2:What is Matter? All Matter has 2 Types of Properties of Matter Physical Properties and Chemical Properties

2. 1. Physical properties – can be observed without changing into another substance. State of matter (solid, liquid, gas), texture, color, flexibility, melting and boiling points 2. Chemical properties – describes the ability to change into different substance. They cannot be observed without changing a substance into a new material Able to catch fire (Flammability), ability to react (rusting, tarnishing), non- reactivity (water does not react with air)

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4. Measuring Matter  Matter is anything that has mass and takes up space (volume)  We can measure mass  We can measure volume  If it can be measured then it is a Physical Property.

5. Measuring Volume  Volume- measured in liter or L, mL, and kL or cubic cm (cm³)and cubic m (m³)  Volume = L x W x H

6. Measuring Irregular Shaped Objects  Displacement – submerge object in water in graduated cylinder. Measure the difference water rises.  1ml of water = 1cm³

7. Scientist Prefer Mass Instead of Weight  Mass – measured in grams or g, mg, and kg Use a balance to measure mass  Mass does not change even when force of gravity changes on mass  Weight changes with force of gravity; changes with location throughout the universe Use a scale to measure weight

8. Density  Density = mass (g) / volume (cm 3 )  If we can measure mass and volume then density is a Physical Property  Relative density states that the least dense items will be on top and most dense items on the bottom

9. Entrance Quiz Unit 2 1. Which of the following is NOT a unit of measure for volume? a. cm³ b. ml c. g d. liter 2. What are the 2 properties all matter have? a. mass and weight b. mass and volume c. volume and density d. physical and chemic al

10. Entrance Quiz Unit 2 3. This is the amount of matter in an object. a. mass b. density c. matter d. Volume 4. Density is the: a. Amount of space an object occupies b. Force of gravity on an object c. Mass in a given volume d. Amount of mass and space object occupies