matter deck 1

Question 1

Characteristics of a Physical Property

Answer 1

1. Substance can change it’s form: Solid, Liquid, Gas 2. substance never becomes something new 3. usually can undo the change

Question 2

Characteristics of a Chemical Property

Answer 2

1. More than one substance is combined 2. A reaction occurs and forms a new substance 3. Cannot undo change

Question 3

Three physical states of most matter

Answer 3

Solid, Liquid, Gas

Question 4

What is the name for each phase change?

Answer 4

Solid to Liquid: Melting
Liquid to Gas: evaporated
Gas to liquid: condensation
Liquid to solid: freezing

Question 5

Gas substances at room temp

Answer 5

oxygen, carbon dioxide

Question 6

Three characteristics of a solid

Answer 6

1. have a definite shape 2. definite volume 3. High density

(Solids are formed when liquids are cooled)

Question 7

How do large crystals form in solids?

Answer 7

when carbon atoms bond together and they cool slowly

Question 8

What state is the most common for the basic elements?

Answer 8

solids

Question 9

More Kinetic energy: solid or liquid?

Answer 9

Liquid because if their attraction is less, it will spread out

Question 10

What shape does a liquid have?

Answer 10

It takes on the shape of the container

Question 11

What is viscosity?

Answer 11

How strongly liquids/molecules are attracted to one another.

Question 12

How is a liquid similar to a solid?

Answer 12

bother denser that gas, both have definite volume, and their molecules are closer together than gas.

Question 13

How is a liquid different from a solid?

Answer 13

liquids can’t change shape

Question 14

How would you change a solid to a liquid?

Answer 14

melting it

Question 15

When is a substance called a gas?

Answer 15

When it has enough energy that the molecules can freely move away from each other.

Question 16

What is the shape of a gas?

Answer 16

it doesn’t have a definite shape

Question 17

In which state of matter are the molecules moving the fastest?

Answer 17

gas

Question 18

What is atmospheric pressure?

Answer 18

a pressure that is applied or taken away from molecules and that pressure is in the air or atmosphere.

Question 19

How is a gas similar to a liquid?

Answer 19

both fit in the same container, both move freely

Question 20

How is a gas different from a liquid?

Answer 20

gas has more kinetic energy than liquid.

Question 21

If the temp. remains constant, what happens to the volume of a gas when the pressure is increased?

Answer 21

the volume will increse

Question 22

if pressure remains constant, what happens to the volume of a gas when the temp. is increased?

Answer 22

volume will decrease

Question 23

what are 2 different ways to increase the volume of a gas?

Answer 23

increase temp. and decreasing pressure

Question 24

why might you need to check the air in our bike tires before you go for a ride on a cold day?

Answer 24

because when temp. decreases, volume decreases. (there is less volume in the tires)

Question 25

why do you think increasing pressure decreases the volume of a gas?

Answer 25

because when the molecules are pushed closer together, there is less space

Question 26

why do you think increasing temp. increases the volume of a gas?

Answer 26

because molecules have more energy when you apply heat.