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Physical Science Semester 2 Review

Total questions: 50

Worksheet time: 47mins

Name
Class
Date
1.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
2.

How many Sodium (Na) are in 6 NaCl?

a)

1

b)

12

c)

6

3.
If there is no subscript, there is ______ atom(s) of that element.
a)
0
b)
2
c)
only 1
d)
1 million
4.
In this image, what are the symbols in red are called the_______.
a)
Products
b)
Reactants
c)
Subscripts
d)
Coefficients
5.
The law of conservation of mass states that....
a)
Matter can be created
b)
Matter is sometimes destroyed
c)
Matter cannot be created or destroyed
d)
Matter can be created but not destroyed
6.
In this image, the symbols to the right of the arrow (in black) are called the_______.
a)
Products
b)
Reactants
c)
Subscripts
d)
Coefficients
7.
Which equation is balanced?
a)
2H2 + O2 --> 2H2O
b)
H2 + O2 ---> H2O
c)
H2 + 2O2 ---> 2H2O
d)
2H2 + 2O2 ---> 2H2O
8.

The formula for sulfur hexafluoride is

a)

S6F

b)

SF6

c)

SuF5

d)

SFl6

9.

What is the FORMULA for....

beryllium iodide

a)

Be2I

b)

BeI

c)

BeI2

d)

BI2

10.

Which one shows that a chemical reaction has occurred?

a)

dissolving

b)

melting

c)

formation of a gas

d)

bending

11.
Which of the following answers will balance the equation below?
__K + __Br2 --> __KBr
a)
2, 1, 1
b)
2, 3, 2
c)
2, 1, 2
d)
1, 2, 3
12.
What type of reaction is illustrated below?
FeS + Hal --> H2S + FeCl
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
13.
Which of the following options correctly balances the equation below?
__HNO2 + __O2 --> __HNO3
a)
4, 1, 4
b)
1, 2, 1
c)
1, 2, 1
d)
2, 1, 2
14.
What type of reaction is illustrated below?
2HI --> H2  +  I2
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
15.

A chemical reaction or process that absorbs heat from the surroundings

a)

Endothermic

b)

Exothermic

16.

Speed of an object in a particular direction is:

a)

motion

b)

velocity

c)

speed

d)

acceleration

17.

The rate at which speed or velocity changes:

a)

acceleration

b)

average speed

c)

motion

d)

reference point

18.

A location to which another location is compared.

a)

Position

b)

Reference Point

c)

Location

d)

Placement

19.

The amount of work an object can do because of the objects kinetic and potential energy.

a)

Energy

b)

Mechanical Energy

c)

Kinetic Energy

d)

Potential Energy

20.
Find the velocity of a truck that travels 75 miles north in 2.5 hours.
a)
187.5 mph north
b)
30 mph north
c)
300 mph north
d)
200 mph north
21.

A car accelerates from a standstill to 70 m/s in 10 seconds. What is the acceleration?

a)

0.7m/s2

b)

7m/s2

c)

14m/s2

d)

none of the above

22.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
23.

Jermaine runs exactly 2 laps around a 400 meter track. What is the displacement?

a)

800 m

b)

400 m

c)

0 m

d)

200 m

24.
A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
25.

A rollercoaster heading down a hill is _____________.

a)

at rest

b)

slowing down

c)

accelerating

d)

velocity

26.

A ______ is a push or pull on an object.

a)

force

b)

speed

c)

acceleration

d)

velocity

27.

A force that causes an object to slow down when it touches another object is _________.

a)

gravity

b)

friction

c)

inertia

d)

Newton

28.

Net force is a combination of all ________ acting on an object.

a)

forces

b)

speeds

c)

accelerations

d)

velocities

29.

If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?

a)

150 Newtons

b)

15 Newtons

c)

150 kilograms

d)

100 kilograms

30.

The unit for Work

a)

Newton (N)

b)

Joule (J)

c)

Second (s)

d)

Watt (W)

31.

The unit for Power

a)

Newton (N)

b)

Joule (J)

c)

Second (s)

d)

Watt (W)

32.
F=200 N
d=50 m
w=??
a)
4 J
b)
0.25 J
c)
250 J
d)
10,000 J
33.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
34.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
35.
A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds.  How much power was used?
a)
360 W 
b)
60 W
c)
3600 W
d)
600 W
36.
How much work is produced when 350 N is used to move a car 5 m?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
37.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
38.

What type of energy is greatest when the cannonball is at point C?

a)

kinetic energy

b)

potential energy

c)

elastic energy

d)

awesome sauce

39.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

4

40.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
41.

What type of decay is shown here

23892U ---> 23490Th + 42He.

a)

alpha

b)

beta

c)

gamma

42.

Identify the type of nuclear decay shown here

21483Bi → 0-1e + 21484Po

a)

alpha

b)

beta

c)

gamma

43.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
44.

The type of radioactive particle that can be stopped by a sheet of paper is the ____.

a)

alpha particle

b)

beta particle

c)

gamma ray

d)

theta particle

45.

Solve this equation for alpha decay.

85209At = ___ + 24He (If you need to sing to remember, please do...)

a)

83205Bi

b)

86209Rn

c)

81207Tl

d)

85208At

46.
Two or more nuclei combine to form one larger nucleus in the process of nuclear _____.
a)
Fusion
b)
Fission
c)
Tracing
d)
Decay
47.

This is an example of a...

a)

Fission reaction

b)

Fusion reaction

c)

Decomposition reaction

d)

Decay

48.
Solve this equation for beta decay.
2760Co = ___ + -10e
a)
2556Mn
b)
2860Ni
c)
2358V
d)
2759Co
49.
What makes something radioactive?
a)
elements with an atomic number above 81
b)
an unstable nucleus
c)
contaminated sewage
d)
It decays over time
50.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days

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