Q1-W5-Sci4-Effect of Temperature in the Phases of Materials (Week 5).pptx

Science 4 Power Point Presentation Phases of Materials

1. Changes in Materials Quarter 1 Science 4 Week 5-6 Ayla Mae L. Ortiz Teacher III

2. Temperature Temperature varies depending on the environment from where the materials are exposed. For example, we feel very hot during summer days because of the intense heat of the sun.

3. Melting This process that happens when solid material changes into liquid form. The heat coming from the environment made the ice cubes melted when they are removed from freezer. The temperature in the freezer is O°C.

4. Freezing is a  phase transition  where a  liquid  turns into a  solid  when its  temperature  is lowered below its freezing point. In accordance with the internationally established definition,  freezing  means the solidification phase change of a liquid or the liquid content of a substance, usually due to  cooling .

5. Evaporation   the process by which  an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils ; in particular, the process by which liquid water enters the atmosphere as water vapour .

6. Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state.

7. Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

8. When materials reached its melting point, solid materials changed into liquid. The temperature at which the liquid will change back to solid is called its freezing point . The melting point of ice is 0°C , this is also the freeing point of water.

9. The boiling point, or the temperature at which water boils, and turned into gas is 100 °C .

10. If the change is from gas to liquid as the temperature falls below it, it is the condensation point.

11. Physical changes like melting of ice cubes, lighted candles, floor wax, margarine , chocolate bar, crayons, and butter resulted to changes in their shape, sizes and texture .

12. Metals expand when heated and contracts when cooled. They resulted to changes in size.

13. What Happens to the Materials when Heated and when Cooled?

14. DAY 2

15. Combustion of engines results to burning of fuels that causes the cars and airplanes to move or run its functions.

16. Analyze the picture below. What changes happens to cars and airplanes to move or run its functions? _____________________________

17. DAY 3

18. Change in Materials When Mixed with Other Materials

19. During hot weather, halo-halo is a favorite food. Have you seen and tasted halo-halo? Look at the picture of halo-halo.

20. Mixture is a substance made by mixing other substances together. It is the product of the random distribution of one substance through another without any chemical reaction , as distinct for a compound. like in halo-halo and wet clothes where water is mixed with the fabric.

21. What Happens to Solid Materials when Mixed with other Solid Materials?

22. What Happens to Solid Materials when Mixed with other Solid Materials?

23. DAY 4

24. Types of Mixtures

25. When solid materials are mixed with solid materials, each of the combined/ mixed materials can be easily identified/ distinguished from one another. These mixtures are called heterogenous mixtures . In halo-halo, you can easily identify or distinguish the ingredients . It is a heterogenous mixture. Each property of the materials in heterogenous mixtures do not change.

26. When sugar is dissolved in water, you cannot distinguish sugar in the solution . This kind of mixture is called homogenous mixture . Examples of these are liquid medicines, sugar and a salt solution .

27. What Happens in Solid Materials when Mixed with Liquid Materials?

28. DAY 5

29. What happens in the Liquid Materials when Mixed with Liquid Materials

30. Write FACT on the blank if the statement is correct and BLUFF if it is incorrect. ________1. When materials are heated, they change their size, shape, texture and form. ________2. When butter is heated, its color and shape remain. ________3. Chocolate and candle do not change their form from solid to liquid when heated. ________4. Some materials undergo changes in their properties when exposed to different temperatures.

31. ________5. When heated, some materials in solid form change to liquid and go back to their original form when cooled down. ________6. When two or more materials are combined, mixture is formed. ________7. Solid materials can be mixed with other solid materials.

32. ________8. Mixed materials can be identified depending on the appearance of the resulting mixture. ________9. When oil and water are put together it formed homogeneous mixture ________10. It is a heterogeneous mixture when the mixed materials cannot be identified from one another.