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MATTER AND HEATCLIL SCIENCE

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MATTER

Matter is everything around you.

Matter is anything made of atoms1

and molecules. Matter is anything that has a mass.

S TATES OF MATTER

1. Solid: fixed volume and shape

2. Liquid: fixed volume, but not a fixed shape (depend of their container)

3. Gas : dont have a fixed volume or a fixed shape.

TYPES OF MATTER

1. Pure substances cannot be separated into 2 or more substances by physical

or mechanical means

are homogeneous has constant chemical composition

ie: gold, iron, salt

2. Mixtures can be separated into 2 or more substances by physical or

mechanical means

are heterogeneous

ie: sea water (water + salt)

NOTES:

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1 atoms: are extremely small (basic unit of matter) -> They are invisible to the human eye.

ATOMS

IRON

SEA WATER

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P ROPERTIES OF MATTER

1. Mass : is the amount of matter in an object.

We can use scales.

We use.

Kg Hg Dag g dg cg mg

2. Volume: is the amount of space.

We can use test tubes.

We use:

m 3 dm 3 cm 3 mm 3

3. Temperature: is mass per volume

We use thermometers.

We use degrees (C). But english culture uses farenheit degrees (F) 2 .

ie: 32F = 0

2 http://www.albireo.ch/es/conversortemperatura/index.htm (web to converts degrees)

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CHANGES IN MATTER

1. Physical changes (the object or substance changes, but the matter remains the same)

Movement Expansion Contraction

Changes of state

Fragmentation

2. Chemical changes (the original matter changes into a different substance) Oxidation

Combustion Putrefaction

CHANGES OF STATE ( IT OCCURS WHEN THE TEMPERATURE CHANGES )

1. Melting

2. Solidification

3. Boiling

4. Evaporation5. Condensation

6. Sublimation

H EAT AND TEMPERATURE

Heat is energy.

The Universe is made up of matter and energy.

Heat travels quickly through thermal conductors, like metals.

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Q4

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Q6

Q5

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