grade 8 matter

1. INTRODUCION to MATTER
Ignacio Anguera de Sojo

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

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

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

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

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

8. What is mat
2.- Volume:
Volume: amount of space occupied by an object (L, mL, m3,
cm3). To measure:
• Liquid: graduated cylinder (bottom meniscus)
• Regular shape: V = length x width x height
• Irregular shape: volume of water displaced

9. What is mat
2.- Volume:
Volume: amount of space occupied by an object (L, mL, m3,
cm3). To measure:
• Liquid: graduated cylinder (bottom meniscus)
• Regular shape: V = length x width x height
• Irregular shape: volume of water displaced
Which three ways we have to measure volume?

10. What is mat
2.- Volume:
Volume: amount of space occupied by an object (L, mL, m3,
cm3). To measure:
• Liquid: graduated cylinder (bottom meniscus)
• Regular shape: V = length x width x height
• Irregular shape: volume of water displaced
Which three ways we have to measure volume?
Beaker

11. What is mat
2.- Volume:
Volume: amount of space occupied by an object (L, mL, m3,
cm3). To measure:
• Liquid: graduated cylinder (bottom meniscus)
• Regular shape: V = length x width x height
• Irregular shape: volume of water displaced
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.

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

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2.- Volume:
Volume of Irregular Shaped Solid
Archimedes' principle indicates

14. What is mat
2.- Volume:
Volume of Irregular Shaped Solid
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. What is mat
2.- Volume:
Volume of Irregular Shaped Solid

16. What is mat
2.- Volume:

17. What is mat
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).

18. What is mat
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).
Which are the differences between mass and weight?

19. What is mat
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).
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. What is mat
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).
Which are the differences between mass and weight?
It remains me to the images of Neil Armstrong walking in the
moon in 1969.

21. What is mat
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.

22. What is mat
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 has more inertia, a train or a bicycle?

23. What is mat
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 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!

25. What is mat
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…
Which of those is
not a physical
change?

26. What is mat
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…
Which characteristics have physical properties? Give 6
examples.

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5.- Physical Properties: Density

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

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

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

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

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

37. 7.- Chemical Properties
Physical and Chemical
changes

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

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

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