The Properties of Matter (8th grade)

What is matter?
Physical properties
Chemical properties

1. INTRODUCION to MATTER Ignacio Anguera de Sojo

2. What is matter

3. 1.- Properties of matter: What is matter? What is matter

4. 1.- matter: Matter is anything that has mass and takes up space What is matter

5. 1.- matter: Matter is anything that has mass and takes up space What is matter Which two properties has all matter?

6. 1.- matter: Matter is anything that has mass and takes up space What is matter Which two properties has all matter?

7. 1.- matter: Matter is anything that has mass and takes up space What is matter Which two properties has all matter? My cat has mass and take up space, so it is MATTER!!!

8. 2.- Volume: Volume : amount of space occupied by an object (L, mL , m 3 , cm 3 ). To measure: Liquid : graduated cylinder (bottom meniscus) Regular shape : V = length x width x height Irregular shape : volume of water displaced What is matter

9. 2.- Volume: Volume : amount of space occupied by an object (L, mL , m 3 , cm 3 ). To measure: Liquid : graduated cylinder (bottom meniscus) Regular shape : V = length x width x height Irregular shape : volume of water displaced What is matter Which three ways we have to measure volume?

10. 2.- Volume: Volume : amount of space occupied by an object (L, mL , m 3 , cm 3 ). To measure: Liquid : graduated cylinder (bottom meniscus) Regular shape : V = length x width x height Irregular shape : volume of water displaced What is matter Which three ways we have to measure volume? Beaker

11. 2.- Volume: What is matter Which three ways we have to measure volume? The milk we drink at home comes in a regular shape container and it takes up a volume of one liter. Volume : amount of space occupied by an object (L, mL , m 3 , cm 3 ). To measure: Liquid : graduated cylinder (bottom meniscus) Regular shape : V = length x width x height Irregular shape : volume of water displaced

12. 2.- Volume: Meniscus : When we put a liquid on a graduated cylinder it forms a curve called MENISCUS What is matter

13. 2.- Volume: Volume of Irregular Shaped Solid What is matter Archimedes' principle indicates

14. 2.- Volume: Volume of Irregular Shaped Solid What is matter Archimedes' principle indicates The upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces

15. 2.- Volume: Volume of Irregular Shaped Solid What is matter

16. 2.- Volume: What is matter

17. 3.- Mass and Weight: Mass : amount of matter in an object. Always constant. Units: kg, g, mg. Weight : measure of the gravitational force in an object (N). What is matter

18. 3.- Mass and Weight: Mass : amount of matter in an object. Always constant. Units: kg, g, mg. Weight : measure of the gravitational force in an object (N). What is matter Which are the differences between mass and weight?

19. 3.- Mass and Weight: Mass : amount of matter in an object. Always constant. Units: kg, g, mg. Weight : measure of the gravitational force in an object (N). What is matter Which are the differences between mass and weight? It remains me to the images of Neil Armstrong walking in the moon in 1969. "That's one small step for a man, one giant leap for mankind".

20. 3.- Mass and Weight: Mass : amount of matter in an object. Always constant. Units: kg, g, mg. Weight : measure of the gravitational force in an object (N). What is matter Which are the differences between mass and weight? It remains me to the images of Neil Armstrong walking in the moon in 1969.

21. 4.- Inertia: Inertia : tendency of an object to resist being moved or, if it is moving, to resist a change in speed or direction until an outside force acts on the object. What is matter

22. 4.- Inertia: Inertia : tendency of an object to resist being moved or, if it is moving, to resist a change in speed or direction until an outside force acts on the object. What is matter What has more inertia, a train or a bicycle?

23. 4.- Inertia: Inertia : tendency of an object to resist being moved or, if it is moving, to resist a change in speed or direction until an outside force acts on the object. What is matter What has more inertia, a train or a bicycle? I hate to sweep under the sofa. Every time that I had to move it I have to overcome a lot of inertia!

24. Physical Properties

25. 5.- Physical Properties: Physical property : characteristic of a substance that can be observed or measured without changing the matter’s identity. Ex: thermal/electrical conductivity, state, density, solubility, ductility… What is matter Which of those is not a physical change?

26. 5.- Physical Properties: Physical property : characteristic of a substance that can be observed or measured without changing the matter’s identity. Ex: thermal/electrical conductivity, state, density, solubility, ductility… What is matter Which characteristics have physical properties? Give 6 examples.

27. What is matter 5.- Physical Properties: Density

28. What is matter 5.- Physical Properties: Density Density : is the relationship between mass and volume (g/ mL ). DENSITY

29. What is matter 5.- Physical Properties: Density Density : is the relationship between mass and volume (g/ mL ). Which of the following liquids has more density? And less density?

30. What is matter 5.- Physical Properties: Density Density : is the relationship between mass and volume (g/ mL ). Which of the following liquids has more density? And less density? It remains me the oil spills responsible of environmental disasters.

31. What is matter 6.- Physical Changes Physical Changes : Change of mater from one form to another without a change in chemical properties. Ex: production of sugar.

32. What is matter 6.- Physical Changes 1.- Sugar cane grow in fields and contain the sugar dissolved in liquid inside the plant Physical Changes : Change of mater from one form to another without a change in chemical properties. Ex: production of sugar.

33. What is matter 6.- Physical Changes 2.- The sugar and shredded. Then, they cane is cut. The cane pieces are washed are squeezed to press out the juice containing the sugar cane. Physical Changes : Change of mater from one form to another without a change in chemical properties. Ex: production of sugar.

34. What is matter 6.- Physical Changes 3.- The water is evaporated form the juice and raw crystals form Physical Changes : Change of mater from one form to another without a change in chemical properties. Ex: production of sugar.

35. What is matter 6.- Physical Changes The sugar molecules in the crystals are the same sugar molecules that were stored in the sugar cane plants. Physical Changes : Change of mater from one form to another without a change in chemical properties. Ex: production of sugar.

36. Chemical Properties

37. Physical and Chemical changes 7 .- Chemical Properties

38. What is matter 5.- Chemical Properties Chemical property : describe a substance’s ability to participate in chemical reactions (reactivity, flammability).

39. What is matter 5.- Chemical Properties Chemical property : describe a substance’s ability to participate in chemical reactions (reactivity, flammability). Which characteristics have all chemical reactions?

40. What is matter 5.- Chemical Properties Chemical property : describe a substance’s ability to participate in chemical reactions (reactivity, flammability). If you cut an apple, the flesh of apples turn brown due to oxidation. Which characteristics have all chemical reactions?

41. What is matter 5.- Chemical Properties Chemical changes : the composition of an object changes. If you cut an apple, the flesh of apples turn brown due to oxidation. Which characteristics have all chemical reactions?