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Science > Chemistry > Flashcards

Chemistry Flashcards

1
Q

What is an atom?

A

The smallest particle of matter

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2
Q

Can atoms be different sizes?

A

Yes

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3
Q

Can atoms be made or destroyed in chemical reactions?

A

No.

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4
Q

What is a molecule?

A

Atoms bonded together

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5
Q

Do atoms have to be the same to be in a molecule ?

A

No

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6
Q

What is an element?

A

Made out of one type of atom

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7
Q

All the known elements are where?

A

The periodic table

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8
Q

When molecules are combined with different elements, what is it called?

A

A molecule of a compound

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9
Q

Do solids have a definite shape and volume?

A

Yes

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10
Q

Does liquid have a definite shape?

A

No

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11
Q

Does liquid have a definite volume?

A

No

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12
Q

Is liquid easy to compress?

A

No

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13
Q

Does gas have a definite shape?

A

No

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14
Q

What does gas definite volume?

A

No

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15
Q

Is it easy to compress gas?

A

Yes

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16
Q

What are particles?

A

We call all the things that make up matter, including atoms, particles

17
Q

What is an atom?

A

The smallest part of a chemical element that can exist.

18
Q

What is matter?

A

Matters anything that takes up space and has a mass

19
Q

What is a physical change?

A

When atoms form in a new ways, give us a mixture but do not create a new substance.

20
Q

What is it called when a solid turns to a gas?

A

Sublimation

21
Q

What is it called when a gas turns to a liquid?

A

Condensation

22
Q

What is it called when a liquid turns to gas?

A

Evaporation

23
Q

When a solid turns to a liquid and a liquid turns to a gas what increases?

A

Temperature

24
Q

Are particles and solids liquids and gases moving normally?

A

They are always vibrating

25
Q

When particles in the atoms get heat energy what happens to them?

A

They vibrate more and move around changing state from a solid to a liquid to a gas.

26
Q

When the particles lose heat and energy what happens to them?

A

They slowed down and vibrate less. This happens during condensation and freezing.

27
Q

What is the boiling point of water?

A

100°

28
Q

What is the point when a liquid turns to gas at a given temperature?

A

Boiling point

29
Q

What is the point when solid turns to liquid at a given temperature called?

A

Melting point

30
Q

What is a chemical change?

A

A chemical change is when atoms arranged in a different way to give us a new substance called compound

31
Q

What is a compound?

A

Two or more elements chemically combined

32
Q

What is a substance?

A

A substance is matter that has the same make up and properties throughout

33
Q

What is diffusion?

A

Diffusion is the spreading out of materials due to the movement of their particles

Science (4 decks)

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