Changes in matter - Science grade 5
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The document discusses changes in matter, highlighting the 5 R's of waste management: reducing, reusing, recycling, repairing, and recovering. It differentiates between physical changes, such as size and shape alterations, and chemical changes, which involve the formation of new substances with different properties. Examples are provided for both types of changes, including the ripening of fruits and rust formation in metals.
Changes in matter - Science grade 5
- 1. S C I E N C E G R A D E 5 CHANGES IN MATTER
- 2. THE 5R’S OF WASTE MANAGEMENT 1. Reducing 2. Reusing 3. Recycling 4. Repairing 5. Recovering
- 3. MANY CHANGES IN MATTER HAPPENS EVERYDAY. Like green papaya fruit turns yellow and sweet after several weeks. Big woody trees are made into chairs, tables, and cabinets. These are all useful changes. However, some changes are also harmful.
- 4. PHYSICAL CHANGE When a material change only in size, shape and form, the material undergoes physical change. A burnt bread is dark and bitter. It is different from the original bread.It resulted in a new material. Such change is called chemical change.
- 6. 1. PHYSICAL CHANGE 1. Change in size and shape 2. Change in phase a. melting -is changing a solid into a liquid.
- 7. b. evaporation C. CONDENSATION d. freezing -is the process of changing liquid into gas. -is changing a gas into a liquid. -is changing liquid to solid.
- 8. E. SUBLIMATION f. deposition -is changing a solid directly to gas without passing through a liquid state. -is changing a gas directly to solid particles.
- 9. What are the types of physical change? Change in size and shape melting freezing deposition evaporation sublimation condensation
- 10. Let’s try to answer activity on your MDLB book page 252. (10minutes)
- 11. 2. Chemical Change -occurs when a new substance with properties different from the original substance is formed. Unripe to ripe fruits
- 13. Rusting nails Rust is the common name of the chemical called iron oxide. ... Rust forms when iron or its alloys are exposed to moist air. The oxygen and water in air react with the metal to form the hydrated oxide. The familiar red form of rust
- 14. Release of gas
- 15. What is chemical change different from physical change?
- 16. Activity #2 MDLB page 264 .