wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Science 7-12 Practice Test 2

Total questions: 56

Worksheet time: 1hrs 22mins

Name
Class
Date
1.

Given the chemical reaction 4Al(s) + 3O2(g) --> 2Al2O3(s), how many moles of O2(g) are needed to produce 100.0 moles of 2Al2O3(s)?

a)

100.0

b)

150.0

c)

200.0

d)

250.0

2.

Given the equation 2KClO3 -> 2KCl + 3O2 , how many moles of O2 can be produced by letting 12.00 moles of KClO3 react?

a)

4 moles

b)

18 moles

c)

24 moles

d)

6 moles

3.
Fluorine is diatomic.  What is the molar mass of fluorine gas?
a)
18.998 g/mol
b)
37.996 g/mol
c)
9 g/mol
d)
18 g/mol
4.
What is the molar mass of table salt (NaCl)?
a)
116.886 g/mol
b)
35.453 g/mol
c)
22.990 g/mol
d)
58.443 g/mol
5.
How many moles are in 16.94g of water?
a)
16.94
b)
0.9403
c)
305.2
d)
1.063
6.

How many water molecules are in 5.2 moles of water? (already given number in moles, so (multiply total moles x Avogadro's number)

a)

6.02 x 1023

b)

5.2

c)

3.1304 x 1024

d)

8.638 x 10-24

7.
What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl2 + H2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
8.
What kind of reaction is this:
2H2O2 →2 H2O + O2
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Combustion
9.
The reaction below is an example of?
AgNO3 + NaCl → AgCl + NaNO3
a)
Single Replacement
b)
Double Replacement
c)
Decomposition
d)
Combustion
10.
What kind of reaction is this:
2C3H7OH +9O2 -> 6CO2 + 8H2O
a)
Double Replacement
b)
Combustion
c)
Single Replacement
d)
Decomposition
11.

Which of the following is NOT true regarding exothermic and endothermic processes or reactions?

a)

Exothermic reactions release heat energy

b)

The melting of ice is an endothermic process

c)

The burning of butane is an exothermic process

d)

The change in enthalpy is positive for an exothermic reaction

12.
Which statement is true regarding endothermic reactions?
a)
a) Temperature change is positive and enthalpy change is positive
b)
b) Temperature change is positive and enthalpy change is negative
c)
c) Temperature change is negative and enthalpy change is positive
d)
d) Temperature change is negative and enthalpy change is negative
13.
Define 'Enthalpy'
a)
a) Energy stored in the movement of molecules in a substance
b)
b) The opposite of temperature
c)
c) The temperature of a molecule
d)
d) Energy stored in the chemical bonds in a substance
14.

Which of the following substances has a pH closest to 1?

a)

Bleach

b)

Vinegar

c)

Water

d)

Ammonia

15.

Which of the following describes the correct procedure to prepare 100.0 ml of 3.00 M HCl solution from an 18.0 M HCl stock solution?

a)

Dilute 16.7 ml of 18.0 M HCl to a total volume of 100.0 ml

b)

Dilute 18.0 of 18.0 M HCl to a total volume of 100.0 ml

c)

Dilute 54.0 of of 18.0 M HCl to a total volume of 100.0 ml

d)

Dilute 14.3 of 18.0 M HCl to a total volume of 100.0 ml

16.

If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?

a)

.188 M

b)

3.78 M

c)

.389 M

d)

1.76 M

17.

If I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?

a)

2 M

b)

0.02 M

c)

0.03 M

d)

0.08 M

18.

Which of the following is NOT true regarding solubility?

a)

Increasing temperature increases the solubility of a solid in a liquid

b)

Increasing temperature increases solubility of a gas in a liquid

c)

Increasing the pressure has little effect on the solubility of solid in a liquid

d)

Increasing partial pressure of a gas decreases the solubility of a gas in a liquid

19.

Systems in nature tend to undergo changes toward

a)

lower energy and less disorder

b)

lower energy and more disorder

c)

higher energy and less disorder

d)

higher energy and more disorder

20.
Entropy always increases when
a)
enthalpy decreases.
b)
temperature decreases.
c)
temperature increases.
d)
volume increases.
21.

Which of the following would most likely dissolve in a nonpolar solvent?

a)

AgNO3

b)

NH3

c)

CCl4

d)

KI

22.

Which of the following characteristics is consistent with an acid?

a)

Turns litmus paper blue

b)

Accepts protons

c)

Reacts with zinc to produce hydrogen gas

d)

Produces OH ions on aqueous solutions

23.

Which of the following is a solute?

a)

Salt in a mixture of salt and pepper

b)

Air in mixture of ash and air

c)

Water in a mixture of salt and water

d)

Sugar in a mixture of sugar and water

24.

Water can dissolve many things so it is called the .....

a)

wonderful water

b)

liquid

c)

cohesion

d)

universal solvent

25.
A moon is located at  1 unit out from the planet it orbits. If that moon was orbiting at 2 units out from the planet, how much would the gravitational force on the moon be compared to its distance at 1 unit?
a)
1/4
b)
1/6
c)
2x as much
d)
4 times as much
26.
What is the Universal law of gravitation equation? 
a)
G=F ⋅ m⋅m2/r2
b)
F=G ⋅ m⋅m2/(r)2
c)
F=G ⋅ r2/m⋅m2
d)
G=F ⋅ r2/m⋅m2
27.

The formula for pressure

a)

Pressure = Force divided by Area

b)

Pressure = Force times Area

c)

Pressure = Area divided by Force

d)

Pressure = Area times Force

28.

The unit for pressure

a)

Pascal

b)

Newton

c)

Gram

d)

Miles

29.
If the Volume of a coke Can is 330ml and the mass of the coke can is 483 grams. What is the density of the Coke can?
a)
0. 68 grams per ml
b)
2.52 grams per ml
c)
813 grams per ml
d)
1.46grams per ml
30.

Which of the following is NOT true about the period of a simple pendulum?

a)

As the mass of a pendulum increases, the period increases

b)

For small amplitudes, the period of a pendulum is independent of amplitude

c)

A pendulum swings more slowly at higher elevation

d)

To double the period of a pendulum, the length must be quadrupled

31.

At what point on the track does the car have the greatest potential energy? The greatest kinetic energy?

a)

at the ending point; at the starting point

b)

at the starting point; at the ending point

c)

at the highest point on the track; at the lowest point on the track

d)

at the lowest point on the track; at the highest point on the track

32.
Centripetal acceleration is ...
a)
Acceleration toward the center of a curved or circular path
b)
Acceleration toward the outside of a circle
c)
Vertical motion instead of horizontal motion
33.
What is the formula for Boyle's Law?
a)
P1V1=P2V2
b)
P1V1/P2V2
c)
P1V2=P2V1
d)
P1/V1=P2/V2
34.
What is the formula Charles' Law?
a)
V = T
b)
VT = VT
c)
T1 / V1 = T2 / V2
d)
V1 / T1 = V2 / T2
35.
PV=nRT
a)
Charles Law
b)
Boyle's Law
c)
Combined Gas Law
d)
Ideal Gas Law
36.

A worker applies a force of 500.0 N to a pulley for a distance of 1.5 m to move a crate that weighs 1000.0 N a distance of 0.5 m. What is the ideal mechanical advantage of this pulley?

a)

4

b)

2

c)

3

d)

5

37.
How much work is produced when 350 N is used to move a car 5 m (W=Fd)?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
38.

What is the mechanical advantage for the inclined plane (slope 15 and height is 3)?

a)

5

b)

1/5

c)

45

d)

17

39.

It's easier to lift heavy objects with a double-pulley system because:

a)

The effort force is twice as much as the resistance force.

b)

The effort force is one-half as much as the resistance force.

c)

The effort force is three times as much as the resistance force.

d)

The resistance force and effort force are equal.

40.

Which of the following statements is true about Coulomb's law?

a)

The force between 2 charged objects is directly related to the square of the distance between them

b)

The force between 2 charged objects is inversely related to the square of the distance between them

41.

What is the current through a resistor of 20.0 ohms if the voltage is 6.0 Volts? (V=IR)

a)

0.30 Amps

b)

120 Amp

c)

3.3 Amps

d)

0.20 Amps

42.
Find total resistance
total current
and the voltage through resistor 3
a)
60 Ohms, 0.4 A, 8 V
b)
60 Ohms, 2.5 A, 8 V
c)
90 Ohms, 2.5 A, 24 V
d)
60 Ohms, 0.4 A, 24 V
43.
Total resistance in a series circuit
a)
Rt = R1 + R2 + R3 ...
b)
1/Rt = 1/R1 + 1/R2 ...
c)
Rt = R1 X R2 / R1 + R2 ...
d)
Rt = RN / RV 
44.
If you increase the total voltage in a circuit how will it affect the light bulb? 
a)
The light bulb will stay the same
b)
It will burn out
c)
The bulb will get brighter
d)
It will get dimmer
45.

Find the total resistance, total current and total voltage for the following circuit

a)

VT = 9 V

I T = 3

RT = 14

b)

VT = 9

I T = 0.64

RT = 14

c)

VT = 9

I T = 6.3

RT = 1.4

d)

VT = 9

I T = 0.64

RT = 1.4

46.

An electromagnet has a lifting force of 5N. If the current through the coil is doubles, what is the lifting force?

a)

2 N

b)

5 N

c)

10 N

d)

20 N

47.

On what does the energy of a photon depend? (E=hf)

a)

Speed

b)

Mass

c)

Frequency

d)

Amplitude

48.

Under which conditions will light undergo total internal reflection?

a)

When the angle of incidence is equal to the critical angle

b)

When the angle of incidence is greater than the critical angle

c)

When the angle of incidence is less than the critical angle

d)

When the angle of incidence is zero

49.
The bending of a wave as it travels from one medium to another and as a result changes speed is called
a)
reflection
b)
refraction
c)
diffraction
d)
interference
50.
The bending of a wave around the edge of a barrier is called
a)
reflection
b)
diffraction 
c)
interference
d)
refraction
51.

Convex lenses can produce...

a)

Real, erect images

b)

Virtual, inverted images

c)

Real, inverted images

d)

no images form

52.

concave lens form

a)

Upright, Virtual images

b)

real images

53.

Zeroth law of thermodynamics is:

a)

Kinetic energy of molecules of a gas is zero

b)

Ideal gas does not contain molecules

c)

If two systems are thermal equilibrium third one is also in equilibrium

d)

Absolute zero temperature cannot be obtained

54.
The first law of thermodynamics is basically the same as which law from physics 1?
a)
Newton's first law
b)
The law of conservation of energy
c)
The law of conservation of momentum
d)
Newton's second law
55.
Which law of thermodynamics states that absolute zero cannot be reached?
a)
1st
b)
2nd
c)
3rd
d)
Zeroth
56.
The _____ Law of Thermodynamics says that heat always flows from an object with a higher temperature to an object of lower temperature naturally
a)
Zeroth
b)
First
c)
Second
d)
Third

Similar Resources on Wayground

AQA Physics Paper 1- Atomic Structure

60 questions

AQA Physics Paper 1- Atomic Structure

quiz

Worksheet

•

9th - 11th Grade

TN - 2023. Vật lý 11

60 questions

TN - 2023. Vật lý 11

quiz

Worksheet

•

11th - 12th Grade

Motion (Speed/Velocity/Acceleration) & Newton's Laws of Motion

57 questions

Motion (Speed/Velocity/Acceleration) & Newton's Laws of Motion

quiz

Worksheet

•

8th Grade

ôn tập chương 2: Điện từ học

58 questions

ôn tập chương 2: Điện từ học

quiz

Worksheet

•

9th Grade

S2 Circuits Mid-unit Test

58 questions

S2 Circuits Mid-unit Test

quiz

Worksheet

•

8th - 10th Grade

Unit 6 - Test Review

55 questions

Unit 6 - Test Review

quiz

Worksheet

•

11th Grade

Công thức tổng hợp VL 12

60 questions

Công thức tổng hợp VL 12

quiz

Worksheet

•

12th Grade

PHÓNG XẠ

53 questions

PHÓNG XẠ

quiz

Worksheet

•

12th Grade