the properties of matter (8th grade)

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INTRODUCION to MATTERIgnacio Anguera de Sojo

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What is matter

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1.- Properties of matter:What is matter?

What is matter

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1.- matter:

Matter is anything that has mass and takes up space

What is matter

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1.- matter:

Matter is anything that has mass and takes up space

What is matter

Which two properties has all matter?

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1.- matter:

Matter is anything that has mass and takes up space

What is matter

Which two properties has all matter?

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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!!!

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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

What is matter

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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

What is matter

Which three ways we have to measure volume?

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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

What is matter

Which three ways we have to measure volume?

Beaker

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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, m3, cm3). To measure:• Liquid: graduated cylinder (bottom meniscus)• Regular shape: V = length x width x height• Irregular shape: volume of water displaced

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2.- Volume:

Meniscus: When we put a liquid on a graduated cylinder it forms a curve called MENISCUS

What is matter

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2.- Volume:Volume of Irregular Shaped Solid

What is matter

Archimedes' principle indicates

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2.- Volume:Volume of Irregular Shaped Solid

What is matter

Archimedes' principle indicatesThe 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

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2.- Volume:Volume of Irregular Shaped Solid

What is matter

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2.- Volume:What is matter

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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

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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?

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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".

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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.

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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

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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?

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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!

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Physical

Properties

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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?

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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.

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What is matter5.- Physical Properties: Density

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What is matter5.- Physical Properties: DensityDensity: is the relationship between mass and volume

(g/mL).

DENSITY

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What is matter5.- Physical Properties: DensityDensity: is the relationship between mass and volume

(g/mL).

Which of the following liquids has more density? And less density?

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What is matter5.- Physical Properties: DensityDensity: 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.

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What is matter6.- Physical Changes

Physical Changes: Change of mater from one form to another without a change in chemical properties. Ex: production of sugar.

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What is matter6.- 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.

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What is matter6.- 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.

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What is matter6.- 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.

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What is matter6.- 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.

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Chemical

Properties

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Physical and Chemical changes7.- Chemical Properties

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What is matter5.- Chemical Properties

Chemical property: describe a substance’s ability to participate in chemical reactions (reactivity, flammability).

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What is matter5.- Chemical Properties

Chemical property: describe a substance’s ability to participate in chemical reactions (reactivity, flammability).

Which characteristics have all chemical reactions?

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What is matter5.- 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?

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What is matter5.- 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?