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Topics 1 - 5 Review Grade 7

Total questions: 46

Worksheet time: 46mins

Name
Class
Date
1.

Which of the following should not be worn during a laboratory activity?

a)

dangling jewelry

b)

loose clothing

c)

sandals

d)

All of the above

2.

You should clean your work area and equipment before you leave the science room.

a)

True (also wash you hands, return all equipment to proper location)

b)

False

3.

Long hair in the science lab must be...

a)

held away with one hand.

b)

cut short.

c)

neatly groomed.

d)

tied back or kept entirely out of the way with a hair tie.

4.
What is the scale on this graduated cylinder?
a)
.1 mL per line
b)
.2 mL per line
c)
.5 mL per line
d)
1 mL per line
5.

What is the volume of the liquid in this graduated cylinder?

a)

21.0 mL

b)

2.1 mL

c)

.21 mL

d)

2.01 mL

6.

What is the mass on the triple beam balance?

a)

232.5 g

b)

237.0 g

c)

750.0 g

d)

232.05 g

7.

Which of the following objects has kinetic energy?

a)

an apple sitting on a desk

b)

a shirt folded on a chair

c)

a rock falling off a cliff

d)

a book lying on a table

8.

Which of the following objects has the most kinetic energy?

a)

a bicycle going 10 miles per hour

b)

a rock sitting on the edge of a cliff

c)

a car going 60 miles per hour

d)

a spring that is compressed

9.

Energy from the sun is

a)

radiant energy

b)

chemical energy

c)

potential energy

d)

kinetic energy

e)

sound energy

10.

What type(s) of energy does a refrigerator create from electrical energy?

a)

Sound Energy

b)

Thermal Energy

c)

Motion Energy

d)

All of the above

11.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
12.
Heat transfers from ______ objects to cold objects. 
a)
Cold
b)
Hot
c)
Convection
d)
Radiation 
13.
What type of heat transfer happens in liquids and gases?
a)
Conduction
b)
Convection
c)
Radiation
14.
Touching hot sand is.... 
a)
Conduction
b)
Convection
c)
Radiation 
15.
Hot air ______ while cool air ____
a)
Sinks, Rises
b)
Rises, Rises
c)
Rises, Sinks
d)
Convection, Radiation 
16.
Hot air rising from a campfire is...
a)
Conduction
b)
Convection
c)
Radiation 
17.
Rubber is considered an _____
a)
Conductor
b)
Insulator
c)
Radiation 
d)
None of the above
18.
Objects that allow energy to pass through them easily are _______
a)
Insulators
b)
Conduction
c)
Conductors
d)
None of the above
19.
Ice melting in a cup is caused by....
a)
The ice is heated up by the drink
b)
Ice is cooling down the liquid
20.

A gas

a)

has a definite shape but no definite volume

b)

has a definite volume but no definite shape

c)

has no definite volume and no definite shape

21.

Which form of matter has a definite shape and has a definite volume?

a)

liquid

b)

solid

c)

gas

d)

clay

22.
Which form of matter fills the space like it has in the balloon?
a)
liquid
b)
string
c)
solid
d)
gas
23.

Matter is made up of particles. Which of the following statements is true about these particles?

a)

The particles that make up solids do not move

b)

The particles that make up liquids do not move

c)

The particles that make up all matter are constantly in motion

d)

Only the particles that make up gases are constantly in motion

24.

2. A change of state from a liquid to a solid is called....

a)

Fusion

b)

Freezing

c)

Evaporation

25.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
26.
All changes in the state of matter of a substance requires
a)
vibration
b)
water
c)
permission
d)
energy
27.

What happens to particles when they are heated?

a)

They speed up and spread out

b)

They slow down and get closer together

c)

They stop moving

d)

They move closer together and speed up

28.

An object is is placed into 45 mL of water. The water rises to 48 mL. What is the volume of the object?

a)

3.0 mL

b)

93.0 mL

c)

8.0 mL

d)

83.0 mL

29.
The tool used to measure the mass of a substance or object is a ______________.
a)
balance
b)
graduated cylinder
c)
ruler
d)
thermometer
30.

What 2 measurements are used for DENSITY

a)

Mass and Weight

b)

Mass and Acceleration

c)

Mass and Volume

d)

Length and Width

31.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
32.

True or False: As long as the temperature and pressure do not change, the density of a specific type of material never changes.

a)

True

b)

False

33.
Why do ice cubes float in a  glass of water?
a)
the ice cubes are more dense than the water
b)
the water is more dense than the ice cubes
c)
the water is more dense than the glass
d)
the ice is more dense than the glass
34.
Mercury is a metal that is liquid at room temperature and has a density of 13.5 g/cm3.  Which of these metals would sink below the mercury if dropped into a container of mercury?
a)
gold (density=19.3 g/cm3)
b)
lead (density=11.4 g/cm3)
c)
iron (density=7.9g/cm3)
d)
aluminum (density=2.7g/cm3)
35.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
36.
Which box has a greater density?  
a)
Box A
b)
Box B
37.
What is this?
a)
Compound
b)
Element
c)
Mixture of elements
d)
Mixture of compounds
38.

This picture represents...

a)

An element

b)

A compound

39.
H2O2← ?
This number tells the number of atoms present.
a)
coefficient
b)
molecule
c)
subscript
d)
atom
40.
→2H2O
This number tells how many molecules are in a chemical equation.
a)
coefficient
b)
subscript
c)
compound
d)
element
41.
2H2O
How many Oxygen atoms are present?
a)
2
b)
4
c)
1
d)
5
42.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

43.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

44.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

45.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

46.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

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