-LESSON-6-SCIENCE.pptx environment in connection with the chemistry

SCIENCE LECTURES

1. REMEMBER Every small step you take today brings you closer to your dreams. Keep going, and believe in yourself-you’ve got this!

2. Grouping Material Based on Properties (Grade 4)

3. A. Properties of Matter

4. Buoyancy The ability of materials to float in water. Some materials that can float or sink exhibit the property of buoyancy and density. These enable boats and ships to float.

5. Meanwhile, an anchor of a boat will sink when thrown into the water. An object will float or sink depending on its density .

6. Density a measure of the amount of matter in a given volume of liquid.

7. Porosity the property of material that allows it to absorb water and other liquids.

8. Other Porous materials include COTTON GAUZE BLANKET PILLOWS SAND

9. Non-absorbent or Non-porous materials are those that do not absorb water like plastic bags, canisters, cans and ceramic mugs. They are useful for storing food items therefore they should be kept dry.

10. Decomposition a property of materials to break down into simpler or smaller forms of matter take case of ripe fruits like banana which easily decays after few days.

11. Organic Matter these parts of the plant is returned to the ground and becomes part of the soil.

12. All materials that decay are also referred to as biodegradable . All living things decay, but not in the same manner.

13. Decaying process is important in returning organic substances to the soil so that other living things will also have source of nutrients for their needs.

14. Not all materials decay as fast as plant or animal parts. Those that do not decay are called non-biodegradable . When thrown into canals and other bodies of water they clog drainage and may cause floods and pollution.

15. Physical and Chemical Properties of Matter: Useful or Harmful Material (Grade 5)

16. Multiple material products are beneficial to man because of technology. Because of technology, raw materials are transformed to different products that have improved man’s way to life.

17. Household materials and consumer products can be grouped as Those used for cleaning; for food preparation; (3) beautification; Building construction; (5) and household products.

18. Materials found in products like metal container, ceramic, rubber, glass or plastic have specific properties. Humans have learned to manipulate the different properties of matter to create other uses.

19. Materials are enhanced or upgraded by technology. Technology has continuously improved the quality of products such as detergents, household cleaners, food seasoning, medicine, plastic, paints, stainless metals and many more making human life convenient.

20. Materials have beneficial effects at home and in the environment. They can make work and life easier like cooking faster, preserving food, keeping homes and clothes clean, smells good and disinfected.

21. Chemicals can contaminate food and when properly disposed of or even used, they can cause death. Hence, there is a need to exercise care and caution when using them

22. Before buying or using any consumer products-such as food, clothing, medicine, cleaning product, soap and shampoo, insect repellent or pesticides always find out if it is the best for the purpose you need. Caution: Always read the labels or product information leaflets first.

23. Before buying or using any consumer products-such as food, clothing, medicine, cleaning product, soap and shampoo, insect repellent or pesticides always find out if it is the best for the purpose you need. Caution: Always read the labels or product information leaflets first.