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Combined Question Set: Atomic Structure

Total questions: 55

Worksheet time: 36mins

Name
Class
Date
1.

Emma is building a model of an atom for her science project. She wants to know what the center of an atom is called. What should she label it as?

a)

Proton

b)

Nucleus

c)

Electron cloud

d)

Neutron

2.

What is the charge of a neutron?

a)

Positive

b)

Negative

c)

Neutral

d)

Double negative

3.

Which particle is found in the electron cloud?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Nucleus

4.

The mass of a proton is approximately:

a)

0 amu

b)

1 amu

c)

2 amu

d)

10 amu

5.

Which particle determines the identity of an element?

a)

Neutrons

b)

Protons

c)

Electrons

d)

Nucleus

6.

Which subatomic particles are located in the nucleus?

a)

Protons and electrons

b)

Neutrons and electrons

c)

Protons and neutrons

d)

Electrons only

7.

The atomic mass of an element is the sum of:

a)

Protons only

b)

Electrons only

c)

Protons and neutrons

d)

Electrons and neutrons

8.

If an atom has 6 protons, what is its atomic number?

a)

3

b)

5

c)

6

d)

12

9.

Which of the following is an example of an element?

a)

Water

b)

Salt

c)

Carbon

d)

Sugar

10.

What is the difference between a compound and a mixture?

a)

Mixtures have a fixed ratio of components, while compounds do not.

b)

A mixture has only one state of matter, while a compound has multiple states.

c)

Compounds are chemically combined, while mixtures are physically combined.

11.

Which of the following is an example of a mixture?

a)

Table salt

b)

Carbon dioxide

c)

Water

d)

Trail mix

12.

Which of the following can be separated into its components using physical methods?

a)

Compound

b)

Mixture

c)

Element

d)

Molecule

13.

A homogeneous mixture is one in which:

a)

Components are evenly distributed throughout the mixture.

b)

All parts are visible.

c)

Components are unevenly distributed.

d)

Two distinct layers are visible.

14.

Which of the following is a compound?

a)

Iron

b)

Sand

c)

Salt (NaCl)

d)

Oxygen

15.

A jeweler is working with a piece of pure gold to create a new ring. The ring consists entirely of pure gold and nothing else. What is it?

a)

Alloy

b)

Mixture

c)

Element

d)

Compound

16.

Mark is working in a lab and combines hydrogen and oxygen gases. A chemical reaction occurs, and water (H2O) is formed. What is it now?

a)

Solution

b)

Element

c)

Compound

d)

Mixture

17.

A mixture in which pure substances are unevenly distributed throughout the mixture.

a)

Solution

b)

Element

c)

Heterogeneous mixture

d)

Homogeneous mixture

18.

A substance that allows only certain things to pass through.

a)

Mixing

b)

Evaporation

c)

Sifting

d)

Filter

19.

Anything that has mass and occupies space.

a)

Force

b)

Energy

c)

Matter

d)

Volume

20.

A pure substance made of two or more elements chemically combined.

a)

Element

b)

Solution

c)

Mixture

d)

Compound

21.

Separating smaller solid particles from larger solid particles.

a)

Mixing

b)

Evaporation

c)

Filtration

d)

Sifting

22.

A small chunk of matter is made only from Gold atoms. This is an example of a:

a)

Solution

b)

Element

c)

Compound

d)

Mixture

23.

Which is H2O?

a)

Element

b)

Mixture

c)

Compound

24.

Is table salt (NaCl) an element or a compound?

a)

Element

b)

Compound

25.

What type of mixture is shown? (fruit loops)

a)

Heterogeneous

b)

Homogeneous

26.

This type of mixture contains two or more substances that are visibly distinguishable.

a)

Solution

b)

Heterogeneous

c)

Colloid

d)

Homogeneous

27.

The lemonade in this glass is what type of mixture?

a)

Heterogeneous

b)

Homogeneous

28.

Chicken soup is an example of what kind of substance?

a)

Solution

b)

Compound

c)

Heterogeneous mixture

d)

Homogeneous mixture

29.

Kool-Aid

a)

Heterogeneous Mixture

b)

Homogeneous Mixture

c)

Compound

d)

Element

30.

Sarah is drinking a cup of hot chocolate. She stirs in cocoa powder, sugar, and milk. When she finishes stirring, everything has dissolved evenly.

a)

Homogeneous Mixture

b)

Element

c)

Heterogeneous Mixture

d)

Compound

31.

This picture represents which of the following? (water)

a)

Compound

b)

Element

32.

This picture represents which of the following? (Hydrogen)

a)

Compound

b)

Element

33.

Soil is an example of:

a)

Element

b)

Compound

c)

Mixture

34.

An ______________ is made up of one or more of the same kind of atom chemically combined.

a)

Element

b)

Atom

c)

Molecule

d)

Compound

35.

Which of the following represents an element?

a)

CaCO₃

b)

H₂O

c)

H₂

d)

NaCl

36.

Is water an element or a compound?

a)

Element

b)

Compound

37.

Daniel is looking at a sample under a microscope and sees that it contains two or more different elements chemically bonded together. This sample is a …

a)

Compound

b)

Element

c)

Mixture

38.

What is the atomic number of oxygen?

a)

5

b)

Sandwich

c)

8

d)

17

39.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
40.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
41.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
42.
What is the atomic number of this atom?
a)
2
b)
4
c)
6
d)
none of the above
43.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
44.
Which is an electron?
a)
A
b)
B
c)
C
45.

The number 16 for the atomic element sulfur is the

a)

ionic number

b)

isotope

c)

atomic mass

d)

atomic number

46.
The particles with no charge in an atom are the _______.
a)
electrons
b)
neutrons
c)
protons
d)
protons and neutrons
47.
Which letter represents a proton?
a)
A
b)
B
c)
C
d)
D
48.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
49.
The negatively charged particles of an atom are the ______.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
50.
The positively charged particles of an atom are the ________.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
51.
Elements can have the same number of protons?
a)
True
b)
False
52.
Bonus question: What element is this an atom of?
a)
nitrogen
b)
lithium
c)
beryllium
d)
carbon
53.
Identify the atomic mass
a)
79
b)
Au
c)
Gold
d)
196.967
54.

The number of electrons in a Lithium atom is

a)

3

b)

4

c)

6

d)

7

55.
What element is this?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver

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