7th Grade Science Final Review (Part 1)

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29 Terms

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Solids

Take up space, has mass, and has definite volume

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Liquids

Take up space, has mass, takes the shape of its container, and has definite volume

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Gas

Takes up space, has mass, takes the shape of its container, and fills container

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Solid (spacing and motion of particles)

Has molecules close together and moves slightly

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Liquid (spacing and motion of particles)

Has molecules spread apart and moving more

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Gas (spacing and motion of particles)

Has molecules widely spread apart and moving fast

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Evaporation

Liquid to gas

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Freezing

Liquid to solid

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Melting

Solid to a liquid

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Condensation

Gas to liquid

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Sublimation

Solid to gas

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Deposition

Gas to solid

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<p>What is the melting temperature of the above substance?</p>

What is the melting temperature of the above substance?

5oC

<p>5<sup>o</sup>C</p>
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<p>What is the freezing temperature of the above substance?</p>

What is the freezing temperature of the above substance?

5oC

<p>5<sup>o</sup>C</p>
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<p>What is the boiling temperature of the above substance?</p>

What is the boiling temperature of the above substance?

15oC

<p>15<sup>o</sup>C</p>
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<p>What is happening at “e”</p>

What is happening at “e”

A gas is being heated

<p>A gas is being heated</p>
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<p>What is happening at “a”</p>

What is happening at “a”

A solid is being heated

<p>A solid is being heated</p>
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<p>What is happening at “b”</p>

What is happening at “b”

Melting of solid to liquid

<p>Melting of solid to liquid</p>
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<p>What is happening at “c”</p>

What is happening at “c”

A liquid is heating up

<p>A liquid is heating up</p>
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<p>What is happening at “d”</p>

What is happening at “d”

Boiling liquid to gas

<p>Boiling liquid to gas</p>
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<p>In which section of the graph are atoms moving the slowest?</p>

In which section of the graph are atoms moving the slowest?

A

<p>A</p>
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<p>In which section of the graph is this substance in the liquid state?</p>

In which section of the graph is this substance in the liquid state?

C

<p>C</p>
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<p>Where is the least dense liquid?</p>

Where is the least dense liquid?

Lamp Oil

<p>Lamp Oil</p>
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<p>Most dense liquid?</p>

Most dense liquid?

Karo Syrup Honey

<p>Karo Syrup Honey</p>
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<p>How do you know Karo Syrup Honey is the most dense?</p>

How do you know Karo Syrup Honey is the most dense?

The higher the density, the more it will sink.

<p>The higher the density, the more it will sink.</p>
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<p>If we dropped an object in the column and it settled between the water and vegetable oil, what could you tell me about the object’s density?</p>

If we dropped an object in the column and it settled between the water and vegetable oil, what could you tell me about the object’s density?

The object is not denser than water, but denser than vegetable oil.

<p>The object is not denser than water, but denser than vegetable oil. </p>
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What is the definition of density?

The amount of mass in a given volume

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How is density measured?

Mass divided by volume

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Which state of matter has the greatest density of particles?

Solids