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Chemistry YEAR 7 MARIO

Total questions: 21

Worksheet time: 11mins

Name
Class
Date
1.

What are the three states of matter

a)

Obama, liquid, obama pyramid

b)

Solid, liquid, Gs

c)

Gas, water, solid

d)

Gas, Liquid Solid

2.

Liquids and Gases are the only states of matter that can (a)   , unlike solids

3.

What are heating curves

a)
Graphs that show the change in temperature and phase transitions as heat is added to a substance.
b)
Illustrations of the different types of heating systems
c)
Diagrams showing the process of cooling a substance
d)
Charts that display the amount of electricity used for heating
4.

When liquids, (because their particles energy slows down) freeze do they become a solid, stay the same (liquid) or do they form a gas

a)

Liquid

b)

WATER

c)

solid

d)

gas

5.

When gases freeze, they become a solid

a)

TRUE

b)

FALSE

6.

What is considered room temp (for water)

a)

25.5 C

b)

500000 C

c)

25 C

d)

20 C

7.

What is diffusion

a)

When the particles combine together

b)

When gases mix

c)

When particles travel from an area of low concentration to an area of high concentration

d)

When particles travel from an area of high concentration to an area of low concentration

8.

Diffusion occurs until the particles:

a)

are unevenly distrubuted

b)

are mixed randomly

c)

are evenly distributed

d)

Until the particles are distributed without any energy left

9.

what is the difference between a blue bunsem burner flame and a orange one

a)
Temperature difference
b)
The color of the flame
c)
The type of gas used
d)
The size of the burner
10.

Copper has a melting point of 1085 Celsius, and a boiling point of 2580 Celsius, what state is copper at room temperature.

a)
Solid
b)
Gas
c)
Liquid
d)
Plasma
11.

What exactly is evaporation

a)
Evaporation is the process of a liquid turning into a gas.
b)
Evaporation is the process of a gas turning into a solid.
c)
Evaporation is the process of a gas turning into a liquid.
d)
Evaporation is the process of a solid turning into a gas.
12.

What is the definition of melting

a)
To change from a solid to a liquid state by the application of heat
b)
To change from a liquid to a gas state by the application of heat
c)
To change from a solid to a gas state by the application of heat
d)
To change from a liquid to a solid state by the application of heat
13.

What is the definition of boiling

a)
The process in which a liquid turns into gas when it is cooled
b)
The process in which a liquid turns into solid when it is heated
c)
The process in which a solid turns into liquid when it is heated
d)
The process in which a liquid turns into vapor when it is heated to its boiling point.
14.

What is the Sublimation

a)
Solid to liquid
b)
Liquid to gas
c)
Gas to solid
d)
Solid to gas
15.

What is freezing

a)
The process in which a solid turns into a liquid due to an increase in temperature
b)
The process in which a liquid turns into a solid due to a decrease in temperature
c)
The process in which a gas turns into a liquid due to a decrease in temperature
d)
The process in which a liquid turns into a gas due to an increase in temperature
16.

What is condensation

a)
The process by which a liquid turns into a gas
b)
The process by which a solid turns into a gas
c)
The process by which a liquid turns into a solid
d)
The process by which a gas turns into a liquid
17.

Mercury has a melting point of -39 and a boiling point of 357, what state is Mercury at room temperature

a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
18.

Diffusion only occurs in gases (true or false)

a)
true
b)
maybe
c)
false
19.

What are cooling curves

a)
Cooling curves are musical notes that create a calming effect
b)
Cooling curves are lines drawn on a map to indicate areas with low temperatures
c)
Cooling curves are a type of exercise routine designed to lower body temperature
d)
Cooling curves are graphs that show the change in temperature of a substance as it cools over time.
20.

Are cooling curves actively showing the state of matter the substance is in

a)
Yes
b)
Sometimes
c)
No
21.

Can solids change shape

a)
Only when submerged in water
b)
No
c)
Only when heated
d)
Yes

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