1. Warm-Up 9/23/13
Classify the steps of the recipe in your folder as physical or chemical
Each person writes the answers on their lined sheet of paper

2. Physical and Chemical Changes
Monday 9/23/13

3. Overview Matter is composed of particles called atoms
Elements are different types of atoms, which can chemically combine to form compounds
Combinations of these elements and/or compounds lead to mixtures!

4. Properties of Matter
Different elements, compounds, and mixtures have different properties
These properties can be classified as physical or chemical

5. Two Categories of Properties
Physical
Chemical
Inherent to substance
Examples: color, smell, freezing/boiling point, density, magnetism, hardness, malleability (can be flattened)
Potential to undergo a type of change
Examples: reactivity with other chemicals, flammability, rusting activity

6. Altering Matter
When a form of matter is subjected to new situations, it may change
These types of changes are characterized as physical or chemical

7. Physical Changes Do not produce a new substance (element or compound)
Examples: crushing, bending, melting, freezing, breaking, dissolving (salt in water)

8. Chemical Changes
Result in the formation of a new substance, take place at the molecular level
Examples: combustion (burning), some cooking, rusting (reaction w/oxygen), mixing with acid/base

9. Your Job
Complete the Chemical and Physical Change WS (two sided with review)
QUIZ tomorrow (elements, compounds, mixtures)