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# Less.1.how does matter change when energy is added or removed (br.)

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### Transcript

• 1. How does matter change when energy is added or removed? Unit E: Lesson 1
• 2. A fast review.
• 3. Matter Everything around us that has: Mass and Volume Example Table, chair, board, water , juice, air, bottle, pencil case.
• 4. Mass Is the amount of matter in an object.
• 5. Tool for measuring mass. Digital balance Two pan balance
• 6. Units for measuring mass. Metric system Gram (g) Kilogram (Kg)
• 7. Volum e Amount of space an object takes.
• 8. Tool for measuring volume. (For liquids) Graduated cylinder
• 9. Units for measuring volume. Metric system Milliliter (ml) Liter (L)
• 10. Are the following matter? 1) Sunlight 2) An idea (you think of) 3) Water vapor 4) Balloon 5) Beaker 6) Oxygen 7) Aluminum foil
• 11. States of matter Solid Examples: Table Chair Board Bottle Pencil case Ipad Liquid Examples: Water Milk Pepsi Juice Vinegar Liquid soap Gas Examples: Smoke Oxygen Helium Hydrogen Nitrogen Water vapor (Steam)
• 12. Mass Volum e are called and Physical properties (Something you can observe or measure)
• 13. States of matter Properties Solid Liquid Gas Arrangement Very close to Close to each Far apart each other other of Particles Attraction Very Strong Weak forces weak Shape Definite Indefinite Indefinite Volume Definite Definite Indefinite
• 14. Change of state Occurs when a substance changes from one state to another. HOW can we change states of matter?
• 15. Melting (Change of solid to liquid by heating) Melt Ice (solid) Heat Water (liquid)
• 16. What happens to the solid particles during the process of melting? Gaining heat More energy Solid Liquid
• 17. Melting point (The temperature at which a substance melts) Liquid Water Melting point Above 0°c
• 18. Evapouration (Change of liquid to gas by heating) Evapourate Water (liquid) Heat Water vapour (Gas)
• 19. What happens to the liquid particles during the process of evapouration? Gaining heat More energy Liquid Gas
• 20. Boiling point (The temperature at which a substance boils) Liquid Water Boiling point 100°c
• 21. Condensation (Change of gas to liquid by cooling) Condenses Water vapour (Gas) Cool Water (liquid)
• 22. What happens to the gas particles during the process of condensation? Lose heat Less energy Gas Liquid
• 23. Freezing (Change of liquid to solid by cooling) Freeze Water (liquid) Cool Ice (solid)
• 24. What happens to the gas particles during the process of freezing? Lose heat Less energy Liquid Solid
• 25. Freezing point (The temperature at which a substance freezes) Liquid Freezing point Water 0°c
• 26. Sublimation (Change of solid to gas by heating) Heat Carbon ice (Solid) Heat Co2 (Gas)