States of Matter and Basic Chemistry

Question 1

What is matter?

Answer 1

Mater is anything which occupies space and has a mass.

Question 2

What do you need for a change of state to happen?

Answer 2

Heat.

Question 3

What happens if you add heat energy?

Answer 3

There is more movement.

Question 4

What happens if you take away heat energy?

Answer 4

There is less movement.

Question 5

What are some properties of a matter that is solid?

Answer 5

-rigid
-fixed shape
-fixed volume
-cannot be squashed

Question 6

What are some properties of a matter that is liquid?

Answer 6

-not rigid
-no fixed shape
-fixed volume
-cannot be squashed

Question 7

What are some properties of a matter that is gas?

Answer 7

-not rigid
-no fixed shape
-no fixed volume
-can be squashed

Question 8

What is it called when a solid turns into a liquid?

Answer 8

Melting.

Question 9

What is it called when a liquid turns into a solid?

Answer 9

Freezing.

Question 10

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

Answer 10

Evaporating or boiling.

Question 11

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

Answer 11

Condensing.

Question 12

Which state of matter has compact molecules?

Answer 12

Solid.

Question 13

Which state of matter has joined but spaced out molecules?

Answer 13

Liquid.

Question 14

What state of matter has spaced out molecules?

Answer 14

Gas.

Question 15

What are some things about chemical changes?

Answer 15

-not easily reversible
-new product(s) formed
-reactants used up —-
-often heat/light/sound/fizzing occurs.
-electricity may be produced
-a precipitate may form
e.g. Wood burning.

Question 16

What are some things about physical changes?

Answer 16

-easily reversible
-no new products
-often just a state change
e.g. Ice melting.

Question 17

A chemical reaction is when…

Answer 17

a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.

Question 18

A physical reaction is when…

Answer 18

a reaction in which a change to the physical properties of a material or substance occurs.

Question 19

What is Diffusion?

Answer 19

The movement of
a substance from an area of high concentration to an area of low concentration.

Question 20

What state of matter does diffusion happen in and why?

Answer 20

Diffusion happens in liquids and gases
because their particles move randomly from place to place.