1. MATTER

3. Introduction Matter - anything that has mass and occupy space (volume) Matter - anything that has mass and occupy space (volume) All matter is made up of very small particles All matter is made up of very small particles Particles are in constant & random motion Particles are in constant & random motion There is space between particles There is space between particles

4. State of matter Matter Solid Liquid Gas

5. Some properties of solids, liquids and gases Fixed shape Fixed volume Cannot compressed Cannot flow Not fixed shape Fixed volume Cannot compressed Can flow Not fixed shape Not fixed volume Can compressed Can flow Solid Liquid Gas

6. A Particle model of matter - Closely packed together together - In fixed position - Vibrate in fixed position position - Closely packed together (not as together (not as close as in solid) close as in solid) - Not in fixed position position - Free to move in all directions (in all directions (in short distant) short distant) - Far apart from each other each other - Not arranged in fixed in fixed position position - Free to move in all directions in all directions - Use to explains the properties of a solid, a liquid and a gas Soli d Liquid Gas

7. Changes in matter

8. Fill in the blank 1. Matter can be group into three: ______, _______, _________. 2. Matter is made up of _________. 3. State the process involve in the changes below: (a) solid -> gas _____________ (a) solid -> gas _____________ (b) solid -> liquid _____________ (b) solid -> liquid _____________ (c) liquid -> gas _____________ (c) liquid -> gas _____________ [below boiling point] [below boiling point] (d) liquid -> solid _____________ (d) liquid -> solid _____________ (e) gas -> liquid _____________ (e) gas -> liquid _____________

9. Continue:SolidsLiquidsgases ShapeFixed__________________ Volume_________ Not fixed _________ Compression ______ be compressed _______ be compressed Can be compressed Ability to flow _______ flow ________ flow Can flow in all directions 4. Properties of solids, liquids and gases

10. Reminder: H/W: Worksheet Given H/W: Worksheet Given Submit your complete answered paper on the next lesson Submit your complete answered paper on the next lesson