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Molecules

Total questions: 42

Worksheet time: 30mins

Name
Class
Date
1.
What is the term for combining 2 or more atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
2.
What is the name of a single type of atom?
a)
cell
b)
proton
c)
element
d)
atom
3.
What is the picture displayed?
a)
Atom
b)
Element
c)
Molecule
d)
Compound
4.

What is the picture displayed? (Hint: it has more than one type of atom...)

a)

atom

b)

element

c)

molecule

d)

compound

5.

What is the picture displayed? (Hint: it only has one type of atom...)

a)

atom

b)

element

c)

molecule

d)

compound

6.
What is the term for combining 2 or more DIFFERENT atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
7.
Are these molecules also compounds?
a)
YES
b)
NO
8.
Are these molecules also compounds?
a)
YES
b)
NO
9.

How many elements are in the following chemical formula?

CO2

a)

2

b)

1

c)

4

d)

3

10.
What are the basic building blocks for all matter?
a)
atoms
b)
elements
c)
compounds
d)
chemicals
11.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
12.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
13.
All ____________ are made up of two or more atoms bonded together.
a)
atoms
b)
molecules
c)
electrons
d)
elements
14.
Bonds between atoms in a molecule form as a result of the sharing  of?
a)
formulas
b)
electrons
c)
atoms
d)
chemicals
15.
When __________ form, the elements lose there individual chemical properties and take on new properties.
a)
compounds
b)
atoms
c)
subscript
d)
formula
16.
 2H2O
How many Hydrogen atoms are present?
a)
2
b)
4
c)
1
d)
10
17.
2H2O
How many Oxygen atoms are present?
a)
2
b)
4
c)
1
d)
5
18.
2H2O
How many H2O molecules are present?
a)
1
b)
4
c)
2
d)
8
19.

All matter is made of...

a)

energy

b)

atoms

c)

electrons

d)

compounds

20.

A(n) _____________ an be found on the periodic table.

a)

Element

b)

Compound

c)

MIxture

21.

Carbon and oxygen atoms can combine to form the gas called carbon dioxide. Which of the following statements is true, based on the information in the previous sentence?

a)

Carbon dioxide is a molecule, so it no longer has atoms

b)

Carbon dioxide is a molecule made of atoms

c)

Carbon dioxide has atoms, so it is not a molecule

d)

Carbon dioxide is a new kind of atom

22.

A substance that contains only one type of atom is a(n)...

a)

compound

b)

element

c)

heterogeneous mixture

d)

homogeneous mixture

23.

A chemical bond is formed between two atoms when...

a)

the atoms share electrons

b)

the atoms share protons

c)

the atoms share neutrons

d)

All of these answers

24.
What structure is shown in the diagram?
a)
Diamond
b)
Graphite
c)
Carbon fiber
d)
Carbon nanotubes
25.
A chemical bond is:
a)
Made up of electrons
b)
An attractive force that holds atoms together
c)
All of the above
d)
None of the above
26.

Hard...Graphite or Diamond?

a)

diamond

b)

graphite

27.

Slippery...Graphite or Diamond?

a)

diamond

b)

graphite

28.

Each carbon atom joined to 4 others...Graphite, diamond, or both?

a)

diamond

b)

graphite

c)

both

29.

Each carbon atom joined to three other carbon atoms...Graphite, diamond, or both?

a)

diamond

b)

graphite

c)

both

30.

Atoms arranged in layers...Graphite or Diamond?

a)

diamond

b)

graphite

31.
What absorbs ultraviolet rays in the atmosphere?
a)
troposphere
b)
stratosphere
c)
ozone layer
d)
greenhouse gases
32.
Where is the ozone located?
a)
troposphere
b)
stratosphere
c)
mesosphere
d)
thermosphere
33.

This protects us from harmful UV rays from the sun...

a)

Troposphere

b)

Stratosphere

c)

Greenhouse Effect

d)

Ozone Layer

34.

Which of these sets of three items produce chlorofluorocarbons?

a)

cars, factories, and cardboard

b)

spray cans, cardboard, insulation

c)

spray cans, refrigerant, cardboard

d)

spray cans, refrigerant, insulation

35.

How many oxygen atoms does a molecule of ozone contain?

a)

1

b)

2

c)

3

d)

4

36.

What chemical is responsible for breaking up the ozone?

a)

CFCs

b)

Carbon Dioxide

c)

Nitrogen

d)

Oxygen

37.

The Montreal Protocol banned the use of chlorofluorocarbons. What has this done for the ozone layer?

a)

Deplete it completely

b)

Make the ozone hole smaller

c)

Make the ozone hole larger

d)

Thin the layer to allow more gas to escape

38.

Location of the large whole in the ozone.

a)

Antarctica

b)

Artic

c)

Iceland

d)

Africa

39.

True or False? Both O2 and O3 contain oxygen, so both molecules should have similar properties.

a)

True

b)

False

40.

Which of the following is NOT a diatomic molecule?

a)

CO2

b)

O2

c)

H2

d)

N2

41.

Which of the following statements are true about models of molecules? (Select all that apply)

a)

Models of molecules show bonding between atoms.

b)

Models of molecules are necessary because molecules are too hard to see.

c)

Models of molecules are extremely inaccurate.

42.

An ozone hole is not truly a hole because ozone is a ...

a)

gas

b)

liquid

c)

solid

d)

diatomic

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