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Chemistry practice quiz

Total questions: 109

Worksheet time: 1hrs 28mins

Name
Class
Date
1.

What part of an atom has a positive charge?

a)

protons

b)

electrons

c)

neutrons

d)

atoms

2.

What is the center of an atom called?

a)

neutron

b)

nucleus

c)

proton

d)

electron

3.

What two particles are found in the nucleus of an atom?

a)

protons and neutrons

b)

protons and electrons

c)

electrons and neutrons

d)

protons only

4.

What particles have a negative charge?

a)

neutrons

b)

protons

c)

electrons

d)

atoms

5.

What have a neutral charge (or no charge)?

a)

protons

b)

electrons

c)

neutrons

d)

atoms

6.

Two or more elements that have been chemically combined to form a new substance

a)

a compound

b)

an element

c)

matter

d)

atoms

7.

An example of a compound is _________________.

a)

water

b)

hydrogen

c)

oxygen

d)

aluminum

8.

An example of an element is _______________ (pick all that apply).

a)

matter

b)

oxygen

c)

water

d)

hydrogen

9.

How many Oxygen atoms are in H2O?

a)

1

b)

2

c)

0

d)

4

10.

How many atoms are there TOTAL in H2SO4 ?

a)

6

b)

5

c)

7

d)

3

11.

How many atoms of Hydrogen are in this compound?

a)

1

b)

2

c)

3

d)

4

12.

What is colored green in this picture?

a)

symbol

b)

subscript

c)

coefficient

d)

postscript

13.

What is this thing called?

a)

The Periodic Table of Elements

b)

The Element Family

c)

Fodor's Guide to the Elements

d)

The Platonic List of Atoms

14.

On this square, what is the chemical symbol?

a)

79

b)

Au

c)

Gold

d)

196.9665

15.

What is the atomic mass of carbon?

a)

6

b)

C

c)

12.011

d)

Unknown

16.

Which of the following is a sign that a chemical change has taken place?

a)

change in state of matter

b)

change in size

c)

change in shape

d)

change in energy

17.

The chemicals in a chemical reaction that you begin with

a)

Products

b)

Reactants

c)

Starters

d)

Enders

18.
The smallest particle that all matter is made from is ....
a)
Matter
b)
Elastic Energy
c)
a Atom
d)
some Helium 
19.
Paper burning is a __________________ change. 
a)
physical
b)
chemical
20.
Dry ice (solid carbon dioxide) turning into carbon dioxide gas is a 
a)
physical change
b)
chemical change
21.
Which of these phrases describes the results of a chemical change? 
a)
charred wood, ash, and smoke 
b)
salt dissolving in water 
c)
gold nuggets melting 
d)
a dented car door
22.
An iron nail rusting is a _______________ change. The ________________ property of reactivity explains the iron’s ability to form a new substance. 
a)
physical, physical            
b)
physical, chemical 
c)
chemical, chemical 
d)
chemical, physical 
23.
Dissolving Kool-Aid into water is an example of a 
a)
physical change              
b)
chemical change
24.

Which example below is a chemical reaction?

a)

ice melting

b)

water boiling

c)

lighting a match

d)

grape juice freezing

25.
The following changes (melting wax, evaporating gasoline, freezing water) are all examples of
a)
nuclear changes.
b)
chemical changes.
c)
physical changes.
d)
a.  energy consumption.
26.
Which of these BEST describes a physical change?
a)
fireworks explode
b)
a log in the campfire turns into ashes
c)
rust forms on your bicycle
d)
the amount of water in a pan decreases
27.
The density of a piece of gold jewelry is often used to determine its purity. Density is what kind of property?
a)
chemical
b)
colligative
c)
extrinsic
d)
physical
28.
During Mr. Nye's science class, students were expected to identify various substances using physical properties they could easily measure. Mr. Nye gave each of the five groups a green, metal cube and asked them to identify what the cube was made of. Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . His group's cube was made of
a)
aluminum
b)
gold
c)
nickel
d)
zinc
29.
This table displays
a)
price values of the metals.
b)
chemical properties of the metals.
c)
physical properties of the metals.
d)
corrosive resistance of the metals.
30.
Consider the picture of the jar holding oil, syrup, and water. It would be easy to pour off the oil to separate from both the syrup and water because the liquids have different
a)
densities
b)
masses
c)
temperatures
d)
volumes
31.
Color, shape, texture, and size are _____________ properties of matter.
a)
chemical
b)
liquid
c)
physical
d)
solid
32.
A student takes four samples of a white crystalline solid and places each in a well plate. On top of each sample, she carefully places 20 drops of mystery liquids A, B, C and D. Her results for each well are:
The solid dissolves quickly in liquid A.
The solid remains unchanged with the addition of liquid B.
The white solid remains, but dissolves very slowly in liquid C.
When liquid D is added, fizzing occurs and the well becomes warmer.
In which well does a chemical change occur?
a)
a
b)
b
c)
c
d)
d
33.
Water freezes and melts at 0°C. Melting point is what kind of property?
a)
chemical
b)
colligative
c)
extensive
d)
physical
34.
Which of the following would be evidence that a chemical change has occurred?
a)
change in size
b)
change in state
c)
new substance formed
d)
change in shape
35.

Which of the following changes demonstrates a chemical property?

a)

substance breaks in half

b)

substance combusts

c)

hammer bounces off substance

d)

substance floats in water

36.

The abilities to dissolve in water and to conduct electricity are examples of

a)

natural properties

b)

chemical properties

c)

natural laws of matter

d)

physical properties

37.

Which is the correct equation for calculating density?

a)

Density= Mass/Volume

b)

Density = Mass/Weight

c)

Density = Volume/Mass

d)

Density = Volume/Weight

38.

Weight is a flawed measure of mass because it

a)

is not used in other countries

b)

is affected by the force of gravity

c)

tends to fluctuate

d)

can be influenced by temperature and pressure

39.

The law of conservation of mass states that

a)

matter is neither created or destroyed

b)

the mass of an object remains the same even if chemical change occurs

c)

the number of molecules before and after a chemical reaction cannot change

d)

mass is lost when a chemical change occurs

40.

In a solid, particles do not move around each other, but they do

a)

change shape

b)

vibrate

c)

flow

d)

sit completely still

41.

A substance that has neither a definite shape nor a definite volume is a

a)

fluid

b)

solid

c)

liquid

d)

gas

42.

Sugar is considered a crystalline solid because its particles are

a)

arranged in a regular pattern

b)

arranged randomly

c)

completely motionless

d)

able to move around one another

43.
7 on the pH scale means that it is...
a)
Acidic
b)
Basic
c)
Neutral
44.
Bases are what range on the pH scale?
a)
0-6.99
b)
7
c)
7.1-14
d)
0-14
45.
Acids are what range on the pH scale?
a)
0-14
b)
0-6.99
c)
7
d)
7.1-14
46.
Lemon juice is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
47.
Soap is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
48.
Water is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
49.
When found in food, acids are ________
a)
Sour
b)
Bitter
c)
Salty
d)
Slippery
50.
When found in food, bases are _______.
a)
Sour
b)
Bitter
c)
Salty
d)
Soggy
51.
What color does acid turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns red litmus paper blue.
c)
It turns blue litmus paper blue.
d)
It turns blue litmus paper red.
52.

What color does bases turn litmus paper?

a)

It turns litmus paper purple.

b)

It turns blue litmus paper red.

c)

It turns red litmus paper blue.

d)

It turns red litmus paper red.

53.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

54.

A temperature increase causes the particles ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

55.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

56.
The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?
a)
Red, because the activation energy is larger
b)
Blue, because the activation energy is lower
c)
both reaction progress at the same rate
57.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of particle collisions

58.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

59.

The ______________is required to break the bonds of the reactants.

a)

Carbonic energy

b)

Activation energy

c)

Plutonic energy

d)

Energi Gaib

60.
Grinding a seltzer tablet into powder increases the rate of reaction due to increased
a)
concentration
b)
surface area
c)
temperature
d)
reactants
61.

Materials made by humans through chemically changing natural resources are called?

a)

Nonrenewable Resources

b)

Synthetic Materials

c)

Renewable Resources

62.

Natural resources are?

a)

Resources that exist within the environment without humans having to intervene, or put them there.

b)

Resources that exist within the environment through due to human actions.

c)

Organic substrates found deep within the earth's lithosphere

63.

Which of the following is NOT a natural resource?

a)

wood

b)

cotton

c)

oil

d)

plastic

e)

coal

64.

Which of the following is NOT a synthetic material?

a)

Nylon

b)

plastic

c)

paper

d)

polyester

65.

Which is NOT a benefit of synthetic products?

a)

pests don't like it as much

b)

more biodegradable

c)

more durable

d)

stronger

66.

What is an advantages of a

synthetic material?

a)

stronger

b)

not renewable

c)

more expensive

d)

does not require natural resouces

67.

Read the following statements. Select each answer choice that is a true statement about synthetic materials. Please select 4 answers.

a)

Synthetic materials are made from natural resources

b)

Synthetic materials are made by chemically changing natural resouces to create a material with different characteristics.

c)

Some examples of synthetic materials are plastics, medicines, and new fuels.

d)

A synthetic substance cannot be chemically identical to a naturally-occurring substance

e)

Making and using synthetic materials have both positive and negative impacts on society.

68.

A chain of repeating units (called monomers)

a)

monomer

b)

dimer

c)

replicate

d)

polymer

69.
What are the products to a neutralization reaction?
a)
H2 + Ionic Salt
b)
H2O + Ionic Salt
c)
H3O+ + Ionic Salt
d)
OH- + Ionic Salt
70.
Ca(OH)2 is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
71.
HBr is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
72.
When electrons are shared a ________ bond is formed
a)
Ionic
b)
Covalent
c)
Metallic
73.
The reason for the properties displayed by metals is they have________
a)
a sea of electrons (mobile valence electrons
b)
very weak intermolecular forces
c)
strong ionic bonds
d)
their valence electrons are frozen in place
74.
If atoms that are sharing electrons have an unequal attraction for the electrons it is a ____
a)
Ionic bond
b)
Nonpolar covalent bond
c)
Polar covalent bond
d)
Metallic bond
75.
In the HCl molecule which atom would have a slightly negative charge?
a)
H
b)
Both
c)
Cl
d)
Neither
76.

Which part of the atom is responsible for chemical bonding?

a)

Core Electrons

b)

Valence Electrons

c)

Protons

d)

Neutrons

77.
Dull
a)
Metal
b)
Nonmetal
78.
Malleable
a)
Metal
b)
Nonmetal
79.
Ductile
a)
Metal
b)
Nonmetal
80.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
81.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
82.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
83.
A anion will be a ____ ion.
a)
negative
b)
positive
c)
neutral
d)
ficticious
84.
A cation is a ____ ion.
a)
negative
b)
positive
c)
neutral
d)
ficticious
85.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
86.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
87.

What is the Lewis Dot for Calcium Oxide

a)

A

b)

B

c)

C

d)

D

88.
The number of valence electrons is equal to the ____________ for the representative elements (group A elements)
a)
period number
b)
Atomic number
c)
group number
d)
oxidation number
89.
Which of the following is NOT a property on an ionic compound? 
a)
brittle
b)
high melting point
c)
solid at room temperature
d)
malleable
90.
Properties of metals include 
a)
malleable
b)
ductile
c)
good electrical conductors
d)
all the above
91.

Sierra helps her father install an air purifier in her house. What type of separation method does an air purifier use to remove dust and allergens from the air?

a)

distillation

b)

filtration

c)

evaporation

d)

magnetic attraction

92.

Select the following that are elements

a)

NH3

b)

C

c)

Cl

d)

CH

e)

CN

93.

Select the following that are molecules

a)

NH3

b)

CH

c)

O

d)

N

e)

Cl

94.

Apollo 17 astronauts Eugene Cernan and Harrison Schmitt collected the last samples of moon rocks to bring back to Earth in 1972. The astronauts took measurements of the moon rocks using three categories not affected by gravity. This is because the Earth and moon have different forces of gravity. Which measurement did they NOT use?

a)

mass

b)

density

c)

weight

d)

volume

95.

Mira is testing objects for her science experiment. She has a chart listing the mystery object's densities, but no other information. She needs to calculate which object has a mass of 27 grams. If each object has an identical volume of 3 cm3, which object has a mass of 27 grams?

a)

A

b)

B

c)

C

d)

D

96.

Mira is testing objects for her science experiment. She has a chart listing the mystery object's densities, but no other information. She places each object in a large bowl of water in order to determine if any float. Which of the objects, if any, will float?

a)

A

b)

C

c)

All objects will float

d)

No objects will float

97.

As her family eats the delicious dinner, Jia remembers an important fact about the law of conservation of mass. What does she remember?

a)

Matter always moves from hot to cold

b)

Matter is not created or destroyed in any change

c)

Matter can change physically or chemically

d)

Matter is the amount of mass in a given volume

98.

Which is the correct equation for calculating density?

a)

Density = mass/volume

b)

Density = mass/weight

c)

Density = volume/mass

d)

Density = volume/weight

99.

What is the density of an object whose mass is 180 grams and whose volume is 45 cm3?

a)

4 cm3/g

b)

0.25 g/cm3

c)

4 g/cm3

d)

0.25 cm3/g

100.
A glass beaker contains 100 milliliters of water into which 5 grams of salt was stirred. Which item should be used to separate this particular mixture?
a)
triple beam balance
b)
hot plate
c)
spring scale
d)
paper filter
101.

How to separate tea leaves from the water?

a)

Magnetic attractions

b)

Filtration method

c)

Floatation method

d)

Hand-picking method

102.

How to separate the metal earring from the soil?

a)

Floatation method

b)

Sieving method

c)

Filtration method

d)

Magnetic attraction

103.

Motor oil has different ratings depending on how readily it flows. This property depends on how much attraction is present between its particles. Which property of a liquid does this illustrate?

a)

expandability

b)

felxibility

c)

surface tension

d)

viscosity

104.

A scientist has a "mystery element" that she wants to identify by using its properties. These properties include its freezing point. She collected data about the element's freezing point. Use the graph of her data to determine the freezing point of the element. Which of these elements is the "mystery element"?

a)

silicon (1430 degrees Celsius)

b)

nickel (1455 degrees Celsius)

c)

cobalt (1495 degrees Celsius)

d)

iron (1539 degrees Celsius)

105.

Kenneth warmed up a 100 mL sample of air in an expandable container. He displayed the results in the following graph. The results formed a straight line, so he extended the line the full length of the graph. At what temperature did the gas have a volume of 110 mL?

a)

19 K

b)

20 K

c)

110 K

d)

300 K

106.

Min increases the temperature of a gas in an expandable container. If she keeps the pressure constant, what will happen to the volume of gas?

a)

The volume will decrease.

b)

The volume will increase.

c)

The volume will remain the same.

d)

The volume will decrease, then increase.

107.

Sonja and Jeremy performed several experiments to show how changes in temperature affected the volume of an inflated balloon. They made sure the pressure stayed the same. They also showed the effects of pressure on volume if temperature stayed the same. They organized their data in the table. Which experiments provide evidence for Boyle's law?

a)

A and B

b)

C and D

c)

A and C

d)

B and D

108.

A scout on a hike becomes lost. He does not have a compass, but he does have a small needle, a magnet, and some water. He magnetizes the needle and then gently places it on the surface of the water, where it points to the north. What property of the water makes it possible for the needle to lie on the surface of the water?

a)

visocisty

b)

definite volume

c)

surface tension

d)

boiling point

109.
From 30 degrees to 55 degrees, what state of matter is the substance?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma

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