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Physical Science Mid Year Review 8th Grade

Total questions: 56

Worksheet time: 39mins

Name
Class
Date
1.
positive charge, found in nucleus, mass = one
a)
proton
b)
neutron
c)
electron
d)
ion
2.
no charge, found in nucleus, mass = one
a)
proton
b)
neutron
c)
electron
d)
ion
3.
negative charge, found orbiting nucleus, mass is almost zero
a)
proton
b)
neutron
c)
electron
d)
ion
4.
the ability to be hammered into sheets
a)
conductivitiy
b)
ductility 
c)
malleability
5.
Smallest component of an element
a)
atom
b)
molecule
6.
A scientist spilled a few drops of dilute hydrochloric acid on a lab table.  For safety purposes, the scientist sprinkled some baking soda onto the spill.  Which observation would provide the best evidence that a chemical reaction occurred?
a)
The baking soda and hydrochloric acid combined, and bubbles formed.
b)
The baking soda absorbed the hydrochloric acid.
c)
Some of the baking soda dissolved in the hydrochloric acid.
d)
The hydrochloric acid evaporated, leaving only the baking soda.
7.
How many atoms of oxygen are in a molecule of glucose (C6H12O6)?
a)
12
b)
6
c)
18
d)
24
8.
Which is an example of a physical property?
a)
ability to react with acid
b)
 state of matter
c)
flammability
d)
ability to react with oxygen
9.
Which of the following is a physical property?
a)
melting point
b)
flammability
c)
ability to rust
10.
Gold, which is in Group 11 on the periodic table, is an example of a(n) ____________
a)
Alkali Metal 
b)
Other Metal 
c)
Transition Metal
d)
Alkaline Earth Metal
11.
How many protons does an atom of mercury have?
a)
200.6
b)
120
c)
80
d)
0
12.
Which group of elements have both metal and non-metal characteristics?
a)
lanthanides
b)
metalloids
c)
actinides
d)
noble gases
13.
A row on the periodic table of elements is called a...
a)
Period
b)
Group
c)
Family
d)
Column
14.
The elements in this group only have 1 outer electron.
a)
Group 11
b)
Group 1
c)
Group 3
d)
Group 18
15.
The elements in this group have 5 outer electrons.
a)
Group 5
b)
Group 1
c)
Group 18
d)
Group 15
16.
Carbon has an atomic number of 6.  What can you conclude about carbon from this fact?
a)
It has six protons
b)
It has six neutrons
c)
It has six electrons
d)
It has six positrons
17.
Study of inanimate natural objects including chemistry, physics, and astronomy.
a)
Chemistry
b)
Control
c)
Physical Science
d)
Dependent Variable
18.
The scientific study of the structure, properties, and reactions of the chemical elements and the compounds they form.
a)
Chemistry
b)
Theory
c)
Law
d)
Control
19.
Educated guess based upon evidence and used as a starting point for investigation.
a)
Guess
b)
Hypothesis
c)
Independent variable
d)
I don't know
20.
Systematic observation, measurement, and experimentation to form, test, and modify a hypothesis.
a)
Scientific Method
b)
Law
c)
Chemistry
d)
Data
21.

The process by which hot and cold air are transferred in the atmosphere is

a)

conduction.

b)

convection.

c)

insulation.

d)

radiation.

22.

Microwave ovens heat food through the process of

a)

conduction.

b)

convection

c)

radiation.

d)

stratification

23.

Heat is transferred from the heating element to the pot to the boiling water. What is the MOST likely method of heat transfer?

a)

circulation

b)

conduction

c)

convection

d)

radiation

24.

The process of heat radiation is the ONLY method of heat transfer that can occur _____________

a)

under water.

b)

through space.

c)

through the air.

d)

through a solid.

25.

A change in _____ means that a chemical reaction has occurred.

a)

the energy and mass

b)

the kinds of atoms involved

c)

the properties and identity of the reacting substances

d)

the energy and kinds of atoms of the reacting substances

26.

Which is an example of a physical change?

a)

Mixing blue and yellow paint to create green paint

b)

Adding water and yeast to bread dough in order to make it raise.

c)

Mixing two liquids together in a test tube and the tube becoming warm.

d)

Mixing two liquids together in a test tube and the tube becoming warm.

27.

water freezing to form ice

melting a gold chain to create a gold ring

breaking a window into smaller pieces

a)

chemical change.

b)

physical change.

c)

chemical decomposition.

d)

increasing surface volume.

28.

Ben and Jerry were testing powders in science lab. First they put the powder in a zip lock bag. Next they added some water. The powder fizzed and bubbled; soon it disappeared. When the bubbling stopped the bag contained a clear liquid and a lot of gas.


What is the MOST OBVIOUS sign of a chemical change in this reaction.

a)

A gas was produced.

b)

The powder mixed with the water.

c)

There was a change in temperature.

d)

The powder dissolved in the water.

29.

What is the name of this method, shown in the image, used to separate certain mixtures, like sugar and water?

a)

evaporation

b)

floatation

c)

magnetism

d)

sifting

30.

How many electrons can the lowest energy level hold?

a)

2

b)

4

c)

6

d)

8

31.

An electron on an atom's OUTERMOST energy level is called a _____ electron.

a)

constant

b)

stable

c)

outer

d)

valence

32.

How many valence electrons does this atom have?

a)

2

b)

5

c)

8

d)

15

33.

How many valence electrons would an atom of lithium have?

(Lithium has 3 protons.)

a)

1

b)

2

c)

3

d)

5

34.

Which statement best describes evidence that a chemical reaction occurs as a cake bakes?

a)

The water in the cake batter evaporates.

b)

The cake rises as gas bubbles form in the baking cake.

c)

The cake takes the shape of the container in which it is baked;

d)

The water in the cake batter is used to keep the cake moist as it bakes.

35.

How many elements are in the chemical formula CH3CO2?

a)

1

b)

3

c)

4

d)

7

36.

All of the following are examples of elements except...

a)

Cu

b)

Cl

c)

CO

d)

He

37.

Which of the following is not true when referring to the Law of Conservation of Mass?

a)

The mass of the reactants must be the same as the products.

b)

The elements in the reactants must be the same as the elements in the products.

c)

The amount of atoms in the reactants must be the same as the amount of atoms in the products.

d)

The coefficients in the reactants must be the same as the coefficients in the products.

38.

How many total atoms are in this formula 2C2H4O?

a)

8

b)

9

c)

13

d)

14

39.

Winds are an example of _____________ currents?

a)

Convection

b)

Hot

c)

Wind

d)

Depth

40.

The kinetic energy of atoms or molecules

a)

Kinetic Energy

b)

Nuclear Energy

c)

Chemical Energy

d)

Thermal Energy

41.

A device that converts thermal to mechanical energy is a/an ________ __________

a)

Heat Engine

b)

Battery

c)

Solar Panel

d)

Thermostat

42.

The emission/transmission of energy in the form of waves/rays is Radiation.

a)

True

b)

False

43.

Energy is measured in ________.

a)

Celsius

b)

Joules

c)

Kelvin

d)

Cups

44.
___________ is the amount of matter in an object.
a)
mass
b)
weight
c)
volume
d)
force
45.
a measurement of the gravitational force acting on an object
a)
weight
b)
speed
c)
velocity
d)
inertia
46.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
47.

The roller coaster cart has the most gravitational potential energy at position-

a)

W

b)

X

c)

Y

d)

Z

48.
Where is the potential energy the greatest?
a)
A
b)
B
c)
C
d)
D
49.

What is energy?

a)

The ability to do work

b)

A force

c)

Electricity

d)

The ability to transform work

50.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
51.

Where is the potential energy the least?

a)

A

b)

B

c)

C

d)

D

52.

If a Lion ate a gazelle what kind of energy is being transferred?

a)

Mechanical

b)

Chemical

c)

Electrical

d)

Thermal

53.
What kind of energy transformation takes place in this system?
a)
chemical to electrical to light
b)
electrical to chemical to light
c)
electrical to light to chemical
d)
light to chemical to electrical
54.
What two forms of energy are given off by a burning candle?
a)
heat and light
b)
mechanical and electrical
c)
nuclear and light
d)
potential and heat
55.

What is the energy transformation that occurs in an electric pencil sharpener?

a)

mechanical energy to electrical energy

b)

electrical energy to mechanical energy

c)

radiant energy to sound energy

d)

chemical energy to mechanical energy

56.

When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?

a)

thermal energy to mechanical energy

b)

thermal energy to chemical energy to mechanical energy

c)

chemical energy to thermal energy to mechanical energy

d)

chemical energy to electrical energy

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