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8th Grade semester 1 final

Total questions: 109

Worksheet time: 3hrs 2mins

Name
Class
Date
1.
When is the girl's gravitational energy the the highest?
a)
riding up the hill
b)
when she is stopped on top of the hill
c)
riding down the hill
2.
Which of the following is the correct definition for "ENERGY"
a)
the ability to cause movement
b)
the ability to stop heat transfer
c)
the ability to cause change
3.
which kind of potential energy does a roller coaster have when it is at the very top of a hill?
a)
gravitational potential energy
b)
chemical potential energy
c)
elastic potential energy
4.
When does the cart have the most kinetic energy?
a)
1
b)
2
c)
3
d)
4
5.
When is the cart's potential energy decreasing?
a)
1
b)
2
c)
3
d)
4
6.
When is the cart's kinetic energy decreasing?
a)
1
b)
2
c)
3
d)
4
7.
Which of the following is the energy due to motion
a)
Kinetic energy
b)
Potential energy
8.
Which kind energy is in a stretched rubber band?
a)
gravitation potential energy
b)
chemical potential energy
c)
elastic potential energy
9.
What kind of energy is stored due to the interaction between obstacles or particles
a)
kinetic
b)
potential
10.
The energy in electric currents is called
a)
chemical energy
b)
mechanical energy
c)
electrical energy
11.
What kind of energy is stored in food?
a)
gravitational energy
b)
chemical potential energy
c)
elastic energy
12.
The total energy of a group of objects due to large scale motion (like a wind turbine turning) is an example of
a)
chemical energy
b)
mechanical energy
c)
thermal energy
13.
the energy that sound carries is known as
a)
sound energy
b)
radiant energy
c)
thermal energy
14.
The energy due to the motion of particles that make up an object
a)
sound energy
b)
radiant energy
c)
thermal energy
15.
The energy that electromagnetic waves carry is known as
a)
sound energy
b)
radiant energy
c)
thermal energy
16.
The energy that is stored in the nucleus of an atom is known as
a)
Sound energy
b)
nuclear energy
c)
thermal energy
17.
The transfer of thermal energy by collisions between particles in matter (transfer of heat through touching)
a)
conduction
b)
convection
c)
radiation
18.
is the transfer of thermal energy by electromagnetic waves (not touching - like feeling the sun's warmth)
a)
conduction
b)
convection
c)
radiation
19.
The transfer of thermal energy by the movement of the particles from one part of material to another This only occurs in fluids (air, liquid, gases) Examples: water boiling, a heater blowing hot air around the room
a)
conduction
b)
convection
c)
radiation
20.
A snowman will melt in the sun because of
a)
convection
b)
conduction
c)
radiation
21.
water boiling is an example of
a)
conduction
b)
convection
c)
radiation
22.
An egg cooks because it is touching the hot pan. This is an example of
a)
conduction
b)
convection
c)
radiation
23.
As the roller coaster car travels down the hill
a)
kinetic energy increases and potential energy decreases
b)
kinetic energy decreases and potential energy increases
24.
When a person eats a sandwich, and then rides their bike - they are converting
a)
kinetic energy to chemical potential energy
b)
chemical potential energy to kinetic energy
25.
If you shoot a rubber band up to the ceiling, and then it falls down - at what point did it have the MOST gravitational potential energy?
a)
when it was stretched back on your finger
b)
when it hit the ceiling
c)
when it hit the floor
26.
Warm air currents rising causes the hot air balloon to rise. This is an example of
a)
Conduction
b)
Convection
c)
Radiation
27.
As the man hikes up the hill he slows down. As he gets higher and higher his
a)
Kinetic energy decreases and his gravitational potential energy decreases
b)
Kinetic energy increases and his gravitational potential energy decreases
c)
Kinetic energy decreases and his gravitational potential energy increases
28.
Judy hit the golf ball high in the air and it rolled into the hole for a hole in 1! When does the golf ball have the LEAST gravitational potential energy?
a)
high in the air
b)
rolling on the ground
c)
in the bottom of the hole
29.
Batteries have ___________________ potential energy that can be converted to _____________________ energy to light the bulb in a flash light.
a)
chemical, mechanical
b)
mechanical, chemical
c)
chemical, electrical
d)
electrical, chemical
30.

What is kinetic energy?

a)

The energy an object has due to its position or condition

b)

The energy an object has due to its motion

c)

The energy an object has due to its chemical composition

d)

The energy an object has due to its atomic structure

31.

Which object has the most potential energy?

a)

A ball resting on the ground.

b)

A ball being thrown at 100 miles per hour.

c)

A ball on top of a refrigerator.

d)

A ball resting on the edge of a cliff.

32.

What is contained in the nucleus of an atom?

a)

Protons only

b)

Electrons only

c)

Electrons and Protons

d)

Protons and Neutrons

33.

Which of the following would be an example of a physical property?

a)

Volume

b)

Flammability

c)

Ability to rust

d)

Combustibility

34.

Which of the following would be a physical property of a sheet of notebook paper?

a)

Reactivity

b)

Solid

c)

Combustibility

d)

Ability to react

35.
Which one is not in the metric system?
a)
Kilometer
b)
Yard
c)
Centimeter
d)
Meter
36.

Which unit would be best to measure the length of a pencil?

a)

meters

b)

kilometers

c)

Centimeters

d)

Decimeters

37.

Which of the following metric measurements would be used to measure the length of a football field?

a)

centimeters

b)

kilometers

c)

meters

d)

millimeters

38.

The SI unit for volume is the __________.

a)

meter

b)

kilogram

c)

liter

d)

second

e)

Newton

39.
What measurement is not part of the metric system?
a)
millimiter
b)
centimeter
c)
meter
d)
inch
40.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

41.
Which group has the greatest number of valence electrons?
a)
1
b)
14
c)
18
d)
16
42.
How many valence electrons are found in atoms of group 15?
a)
4
b)
5
c)
2
d)
3
43.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

44.

Which elements have the most similar chemical properties?

a)

boron and carbon

b)

oxygen and sulfur

c)

aluminum and bromine

d)

argon and silicon

45.

What group is the most reactive metals?

a)

2

b)

18

c)

1

d)

16

46.

What group is the most reactive non metals?

a)

1

b)

17

c)

2

d)

1

47.
Describe this element.
a)
Highly reactive metal
b)
Highly reactive nonmetal
c)
Stable
d)
Less stable non metal
48.
a)
2
b)
8
c)
3
d)
13
49.
a)
2
b)
3
c)
5
50.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

51.

You calculated the density of an unknown substance to be 7.8g/cm3. According to the chart, which of the substances doe you most likely have?

a)

Zinc

b)

Copper

c)

Tin

d)

Iron

52.

What is the density of an object with a mass of 3g and a volume of 1cm3? (Hint: Density = mass / volume)

a)

1/3 g/cm3

b)

3 g/cm

c)

3 g/cm3

53.

You calculated the density of an unknown substance to be 5.7g/cm3. According to the chart, which of the substances do you most likely have?

a)

Aluminum

b)

Iron

c)

Tin

d)

Zinc

54.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
55.
How many Oxygen are in H2O?
a)
1
b)
2
c)
0
d)
4
56.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
57.
2H2 + O2 --------> 2H2O What  are the reactants?
a)
----->
b)
2H2O
c)
2H2 +O2
58.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
59.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
60.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
61.
Ice melting
a)
Chemical Change
b)
Physical Change
62.
Wood burned in a fireplace
a)
Chemical Change
b)
Physical Change
63.
Baking soda and vinegar combine to make carbon dioxide
a)
Chemical Change
b)
Physical Change
64.
Cake batter baked in an oven
a)
Chemical Change
b)
Physical Change
65.
Is wood burning a physical or chemical change?
a)
Physical 
b)
Chemical
66.

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

a)

Balanced

b)

Magnetic

c)

Spring

d)

Unbalanced

67.

Which law of motion says that you must push or pull objects harder if they have more mass?

a)

1st

b)

2nd

c)

3rd

d)

4th

68.

What law is best described by inertia?

a)

1st

b)

2nd

c)

3rd

d)

law of conservation of mass

69.

What Unit do we Measure Force in?

a)

Newtons

b)

Joules

c)

Force

d)

Kilograms

70.

What is Newton's First Law

a)

F=ma

b)

Every action has an equal and opposite reaction

c)

An object at rest stays at rest, an object in motion stays in motion.

d)

Friction

71.

A 20 kg bike accelerates at 10 m/s2. what was the force

F = m x a

a)

25 Newtons

b)

20 Newtons

c)

200 Newtons

d)

10 Newtons

72.

Newton's third law states that any action will have a(n) _______ and ______ reaction

a)

Equal and similar

b)

Equal and opposite

c)

Equal and different

d)

Greater and opposite

73.

8 N to the left , and 4 N to the right. Find the net force. Is this balanced

a)

12 N Right No

b)

4 N Left No

c)

12 N Right Yes

d)

4 N Left Yes

74.

What is this graph representing?

a)

Constant Speed

b)

Acceleration (speeding up)

c)

Deceleration (slowing down)

d)

No motion

75.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
76.
What is the net force?
a)
30 N 
b)
25 N 
c)
5 N 
d)
55 N 
77.
What is the unit to MEASURE force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
78.
Forces that have a net force of zero 
a)
Balanced force
b)
Unbalanced force
79.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
80.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
81.

If an object is not moving the forces acting upon it are _____________

a)

unbalanced

b)

weak

c)

balanced

d)

Hulk Smash!

82.

Calculate the Net Force.

a)

60N, Right

b)

60N, Left

c)

100N, Right

d)

100N, Left

83.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
84.
Where is the most kinetic energy?
a)
W
b)
X
c)
Y
d)
Z
85.
Where is the most potential energy?
a)
W
b)
X
c)
Y
d)
Z
86.
A person rowing a boat.
a)
Potential Energy
b)
Kinetic Energy
87.
A child sitting at the top of a slide.
a)
Potential Energy
b)
Kinetic Energy
88.
A child riding a bike.
a)
Potential Energy
b)
Kinetic Energy
89.
A boy running laps at the track.
a)
Potential Energy
b)
Kinetic Energy
90.

A  negatively charged particle located outside the atom's nucleus is

a)

a neutron.

b)

a proton.

c)

an electron.

d)

a quark.

91.

A positively charged particle found in the nucleus of an atom is

a)

a quark.

b)

an electron.

c)

a proton.

d)

a neutron.

92.

The smallest particle of an element that still retains the element's properties is

a)

an atom.

b)

a nucleus.

c)

a quark.

d)

an electron.

93.

A scientist performs tests on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample when pressure is applied to it. Based on this information, the element could NOT be a member of which group on the periodic table?

a)

Group 2

b)

Group 8

c)

Group 12

d)

Group 13

94.

How many valence electrons are in an atom of each element in Group 15 in the periodic table? Enter only a number, no letters or words.

(a)  

95.

Four students were asked to complete a table for a science assignment. Each student selected one chemical element from each of four groups in the periodic table and then classified each element as a metal, nonmetal or metalloid. Which table was completed correctly?

a)

A

b)

B

c)

C

d)

D

96.

Students were asked to identify the location of elements in the periodic table based on clues printed on game cards. Based on the data, which periodic table shows the correct location of the four elements?


*the answer choices (F, G, H & J) are the same in the question image and the answer choice images...trying to make it so you can zoom in to see the answers!

a)
b)
c)
d)
97.

Which pair of properties describes the elements in Group 18?

a)

they are chemically stable and liquid at room temperature

b)

they have eight valence electrons and are flammable

c)

they are magnetic and boil at low temperatures

d)

they are gaseous at room temperature and chemically stable

98.

Element R and Element Q have the same number of valence electrons. These elements both have similar chemical behavior, but Element R has fewer energy levels than Element Q. Which statement best describes the positions of the two elements in the periodic table?

a)

the two elements are in the same period, with element R the first element in the period and element Q the last element

b)

the two elements are side by side in the same period, with element Q to the left or element R

c)

the two elements are in the same group, with element R just above element Q

d)

the two elements are in the same group, with element Q at the top of the group and element R at the bottom

99.

Students in a science class prepared flash cards so that they could quiz one another about the arrangement of the periodic table. One of the flash cards contained information about two elements, Element L and Element M.


The students had to use the information on the flash card to determine possible positions of the two elements on a blank periodic table. Which periodic table has the elements placed in locations that match the information on the flash card?

a)
b)
c)
d)
100.

The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed in the image.

Which of these elements is in this group:

a)

Lithium

b)

Strontium

c)

Aluminum

d)

Silicon

101.

Which two elements on the periodic table are in the same period?

a)

Sn and Rb

b)

F and Cl

c)

K and Ba

d)

Se and Te

102.

A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown in the image.


Which two atoms are of elements in the same group in the periodic table?

a)

Atom 1 and Atom 2

b)

Atom 1 and Atom 4

c)

Atom 2 and Atom 3

d)

Atom 3 and Atom 4

103.

A researcher wants to experiment with an element that reacts like phosphorous (P) but has a greater atomic mass. Which element should the researcher select for the experiment?

a)

Nitrogen (N)

b)

Sulfur (S)

c)

Arsenic (As)

d)

Silicon (Si)

104.

The model of the periodic table in the image shows the location of four elements. A student is asked to identify an element that is a pale-yellow brittle solid and does not conduct electricity. At which location in this periodic table would the element most likely be found?

a)

1

b)

2

c)

3

d)

4

105.

Four students were asked to complete a table for a science assignment. Each student selected one chemical element from each of four groups in the periodic table and then classified each element as a metal, nonmetal or metalloid. Which table was completed correctly?

a)

A

b)

B

c)

C

d)

D

106.

Which two elements on the periodic table are in the same period?

a)

Sn and Rb

b)

F and Cl

c)

K and Ba

d)

Se and Te

107.

A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown in the image.


Which two atoms are of elements in the same group in the periodic table?

a)

Atom 1 and Atom 2

b)

Atom 1 and Atom 4

c)

Atom 2 and Atom 3

d)

Atom 3 and Atom 4

108.

The model of the periodic table in the image shows the location of four elements. A student is asked to identify an element that is a pale-yellow brittle solid and does not conduct electricity. At which location in this periodic table would the element most likely be found?

a)

1

b)

2

c)

3

d)

4

109.

What is an example of newtons 2nd law

a)

sleeping

b)

velocity

c)

driving

d)

sitting

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