Chemistry

Question 1

What is an atom?

Answer 1

The smallest particle of matter

Question 2

Can atoms be different sizes?

Answer 2

Yes

Question 3

Can atoms be made or destroyed in chemical reactions?

Answer 3

No.

Question 4

What is a molecule?

Answer 4

Atoms bonded together

Question 5

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

Answer 5

No

Question 6

What is an element?

Answer 6

Made out of one type of atom

Question 7

All the known elements are where?

Answer 7

The periodic table

Question 8

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

Answer 8

A molecule of a compound

Question 9

Do solids have a definite shape and volume?

Answer 9

Yes

Question 10

Does liquid have a definite shape?

Answer 10

No

Question 11

Does liquid have a definite volume?

Answer 11

No

Question 12

Is liquid easy to compress?

Answer 12

No

Question 13

Does gas have a definite shape?

Answer 13

No

Question 14

What does gas definite volume?

Answer 14

No

Question 15

Is it easy to compress gas?

Answer 15

Yes

Question 16

What are particles?

Answer 16

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

Question 17

What is an atom?

Answer 17

The smallest part of a chemical element that can exist.

Question 18

What is matter?

Answer 18

Matters anything that takes up space and has a mass

Question 19

What is a physical change?

Answer 19

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

Question 20

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

Answer 20

Sublimation

Question 21

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

Answer 21

Condensation

Question 22

What is it called when a liquid turns to gas?

Answer 22

Evaporation

Question 23

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

Answer 23

Temperature

Question 24

Are particles and solids liquids and gases moving normally?

Answer 24

They are always vibrating

Question 25

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

Answer 25

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

Question 26

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

Answer 26

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

Question 27

What is the boiling point of water?

Answer 27

100°

Question 28

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

Answer 28

Boiling point

Question 29

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

Answer 29

Melting point

Question 30

What is a chemical change?

Answer 30

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

Question 31

What is a compound?

Answer 31

Two or more elements chemically combined

Question 32

What is a substance?

Answer 32

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

Question 33

What is diffusion?

Answer 33

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