1. Chemistry- Physical versus Chemical Properties

2. What is Chemistry?
Chemistry is the study of the physical and chemical properties of matter

3. What is MATTER? Matter: anything that has mass and takes up space
Mass – the amount of matter in something
Volume – the amount of space something occupies
Which of the following is matter?
A car?
The air?
You?
Heat?

4. What is a property?
Property: a characteristic of a substance that can be observed

5. What are Physical Properties?
Physical property: a property that can be observed without changing the identity of the substance.
Examples:
luster
malleability: the ability to be hammered into a thin sheet
ductility: the ability to be stretched into a wire
melting point
boiling point
density
solubility
specific heat

6. Special Physical Properties
Melting point: the temperature at which a substance changes from a solid to a liquid at a given pressure
water = 0oC
Boiling point: the temperature at which a substance changes from a liquid to a gas at a given pressure
water = 100oC

7. What are Chemical Properties?
Chemical property: a property that can only be observed by changing the identity of the substance
Examples:
flammability
ability to rust
reactivity

8. 3-2-1 Summarize!!!
Write 3 facts you wrote in your notes in complete sentences.
Write 2 facts given to you verbally that you did NOT write down in complete sentences.
Write 1 question that presented itself to you while taking notes.