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Science Final Review

Total questions: 46

Worksheet time: 1hrs 14mins

Name
Class
Date
1.

If an Ice cream melts will it be

a)

Physical Change

b)

Chemical change

c)

Elemental change

d)

states of matter changes

2.
What is a reactant?
a)
The starting substance
b)
The ending substance
3.
What is a product?
a)
The starting substance
b)
The ending substance
4.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the reactant(s).
a)
Hydrogen and Oxygen
b)
water
5.
Angelina mixes 2 substances together in a beaker. The beaker becomes hot and the liquid changes color.
Did a chemical reaction occur?
a)
yes, because the properties changed and a new substance was made.
b)
no, because the properties did not change.
6.
Which of the following are NOT signs that a chemical reaction occured?
a)
the properties changed
b)
bubbles of gas formed
c)
color stays the same
d)
smells different
7.
Burning is always a chemical reaction.
a)
True
b)
false
8.
Which of the following is NOT a chemical reaction?
a)
burning a marshmallow in a campfire.
b)
a campfire
c)
acid rain turning a copper roof green.
d)
Dissolving red Koolaid in water.
9.

Identify ALL of the chemical changes

a)

Boiling water

b)

Burning a marshmallow

c)

Fireworks going off

d)

Cutting your hair

e)

Dying your hair

10.

Which best represents a balanced equation?

a)

120 grams of carbon plus 20 grams of oxygen → 200 grams of carbon dioxide

b)

120 grams of carbon plus 50 grams of oxygen → 200 grams of carbon dioxide

c)

120 grams of carbon plus 80 grams of oxygen → 200 grams of carbon dioxide

11.

When chemicals react in a closed container, which must be true?

a)

The mass both before and after the reaction is the same.

b)

The mass both before and after the reaction is variable.

c)

The same number of compounds is present both before and after the reaction.

12.

If 100 grams of vinegar and 5 grams of baking soda are poured in a container, a small amount of gas will be produced. What will the final mass of the products be if the gas is trapped in the container?

a)

100 g

b)

104 g

c)

105 g

d)

110 g

13.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
14.
During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______. 
a)
Warm
b)
Cold
15.
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
16.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
17.

Which of the following represents the monomer of this image?

a)
b)
c)
18.
When a substance melts, the kinetic energy _____________.
a)
decreases
b)
stays the same
c)
increases
d)
decreases then increases
19.
What takes place when a liquid changes to a gas?
a)
condensation
b)
melting
c)
evaporation
d)
freezing
20.

Are the particles moving faster or slower as time goes on?

a)

Faster

b)

Slower

21.

What is happening to the particles in the substance between points D and E?

a)

Melting

b)

Freezing

c)

Vaporizing

d)

Sublimating

22.

What state of matter is pictured?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

23.

What is the number of complete waves passing a fixed point in a given amount of time?

a)

Amplitude

b)

Intensity

c)

Wavelength

d)

Frequency

24.

Which type of waves have the longest wavelength?

a)

Visible light

b)

Radio waves

c)

X-rays

d)

Gamma-Rays

25.

Shorter wave lengths can carry more energy. Which of these probably carries the MOST energy:

a)

Infrared light

b)

Visible light

c)

X-rays

d)

UV light

26.
When the frequency of a wave increases, what happens to the wavelength?
a)
The wavelength is not directly affected by the frequency of a wave.
b)
The wavelength increases.
c)
The wavelength decreases.
d)
More specific information is needed to form a conclusion about the wavelength.
27.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
28.

Which of the diagrams shows the least gravitational force?

a)

I

b)

II

c)

III

d)

IV

29.

If two charges attract to each other, then which of the following is true?

a)

Both charges must be positive.

b)

Both charges must be negative

c)

Both charges must be different.

d)

Both charges must be equal in value.

30.

A student claims that the magnetic fields are not the same across the magnet. Using the picture, what evidence best supports the claim?

a)

The magnetic fields of the magnet are strongest at both poles.

b)

The magnetic fields of the magnet are strongest at the north pole.

c)

The magnetic fields of the magnet are strongest at the south pole.

d)

The magnetic fields of the magnet are strongest at the middle

31.

How do you increase the strength of an electromagnet?

a)

add more magnets

b)

larger core

c)

increase the number of coils around the core

d)

salt water

32.

Which Apple has the greatest Gravitational Potential Energy?

a)

Apple A

b)

Apple B

c)

Apple C

d)

Apple D

33.

The image shows

a)

kinetic energy

b)

elastic potential energy

c)

chemical energy

d)

sound energy

34.

The _______________ is transformed into electrical energy inside the battery.

a)

chemical energy

b)

sound energy

c)

kinetic energy

d)

potential energy

35.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
36.

Potential energy depends on ____________ & ______________.

a)

mass, speed

b)

mass, position

c)

speed, position

d)

mass, weight

37.

Kinetic energy depends on _____________ & _____________.

a)

mass, speed

b)

mass, position

c)

mass, weight

d)

speed, distance

38.
Eggs cooking in a frying pan.
a)
Conduction
b)
Convection
c)
Radiation
39.
Laying out in the sun.
a)
Conduction
b)
Convection
c)
Radiation
40.

Near the ceiling of a room the air is warmer. The warm air rises because of

a)

conduction

b)

convection

c)

radiation

41.

In which section is the car undergoing positive acceleration?

a)

a to b

b)

b to c

c)

c to d

d)

d to e

e)

f to g

42.

Check all that apply.

a)

constant speed

b)

constant acceleration

c)

zero acceleration

d)

increasing velocity

43.

Which one is balanced?

a)

top

b)

bottom

c)

both

d)

Neither is balanced

44.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
45.
Force the opposes motion between 2 surfaces
a)
force
b)
Newton
c)
friction
d)
net force
46.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms

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