1. Unit 1: Chemistry Lesson 1: Matter Matters
Science 9
Unit 1: Chemistry
Lesson 1: Matter Matters

2. Objectives By the end of the lesson you should be able to:
Describe matter using physical properties
Use the KMT to describe changes of state
Explain the difference between an element and a compound

3. Matter Matter is anything that has mass and volume
Mass: amount of matter in a substance (g)
Volume: amount of space a substance occupies (L)
Everything around us is matter!

4. Changes in Matter Matter cannot be created nor destroyed
A chemical change is a change in matter than occurs when substances combined to form a new substance.
HINTS: explosions, colour changes when heated
A physical change is a change in appearance but no new substance is formed
HINTS: state changes

5. Describing Matter
On blue paper there are different ways that matter can be described
With a partner separate these descriptions into 2 categories *hint look at your gold pieces of paper*

6. Describing Matter
Physical Properties: characteristics that can be observed or measured
Qualitative: described
Quantitative: measured numerically

7. Qualitative Property
Quantitative Property

8. Properties Qualitative Property Quantitative Property State Solubility
Colour
Conductivity
Malleability
Viscosity
Ductility
Density
Crystallinity
Melting/Freezing Point
Magnetism
Boiling/Condensing Point

9. KMT: Kinetic Molecular Theory
Kinetic Energy: the energy of motion
Kinetic Molecular Theory: explains what happens to matter as the energy in the particles changes

10. All matter is made up of very small particles
KMT
All matter is made up of very small particles
2. There is empty space between particles

11. 3. Particles are constantly moving
Particles of a solid are so tightly packed together that they cannot move around freely. They can only vibrate
Particles of a liquid are farther apart, they can move by sliding past each other
Particles of a gas are very far apart, they move around quickly
4. Energy makes particles move. The more energy particles have, the faster they can move and the farther apart they can get

12. Changes of State: Energy Levels and Temperature?
GAS Solid Liquid
Condensation
Sublimation
Evaporation
Deposition
Melting
Solidification

13. Pure Substances Can be either elements or compounds
Elements: cannot be broken down into simpler substances.
Compounds : are two or more elements combined

14. Element or Compound?

15. Your Turn!
Activity Time: Describing Matter Lab!