WorksheetsUnit 7 Review (Understanding the Atom)
Total questions: 71
Worksheet time: 52mins
Name
Class
Date
1.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons
2.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
3.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
4.
Protons and Electrons balance the charge of an atom.
a)
True
b)
False
5.
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
a)
12 neutrons
b)
12 electrons
c)
12 protons
d)
24 protons and neutrons
6.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
7.
The particles of the atom you can find by knowing the atomic number.
a)
neutrons
b)
protons and electrons
c)
protons and neutrons
d)
atomic mass
8.
Which letter represents a proton?
a)
A
b)
B
c)
C
d)
D
9.
Which letter represents a neutron?
a)
A
b)
B
c)
C
d)
D
10.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
11.
Which letter represents the nucleus?
a)
A
b)
B
c)
D
d)
E
12.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
13.
Which subatomic particle has a positive (+) charge?
a)
Neutron
b)
Proton
c)
Electron
14.
Which subatomic particle has a negative (-) charge?
a)
Proton
b)
Electron
c)
Neutron
15.
Which subatomic particle has a neutral or no charge?
a)
Proton
b)
Electron
c)
Neutron
16.
Where is the nucleus located in an atom?
a)
Near the electron shells/levels
b)
Near the center of an atom
17.
Where are the Electrons found in the structure of an atom?
a)
In the nucleus
b)
In spaces around the nucleus
18.
This particle determines what element you have - the elements identity.
a)
electron
b)
proton
c)
neutron
d)
valence shell
19.
What is the mass of a proton and the mass of a neutron?
a)
1 amu each
b)
2 grams each
c)
13 amu each
d)
10 grams each
20.
Describe an Electron Cloud?
a)
the mist outside of an atom
b)
home of the protons
c)
where electrons are located
d)
nucleus
21.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
22.
Matter that cannot be broken down into a simpler substance – building blocks of life.
a)
neutron
b)
atom
c)
electron
d)
quarks
23.
Elements on the periodic table increase by...
a)
atomic mass
b)
size
c)
mass number
d)
atomic #
24.
How many protons does nitrogen have?
a)
14.01
b)
14
c)
7
d)
15
25.
What is the mass number of an element that has 8 protons and 8 neutrons?
a)
8
b)
0
c)
16
d)
64
26.
In an electrically neutral atom, the number of electrons is equal to the...
a)
atomic number
b)
mass number
c)
average atomic mass
d)
most common isotope
27.
What is the atomic # of an element that has 4 protons, 4 electrons, and 5 neutrons?
a)
4
b)
5
c)
6
d)
9
28.
How many electrons does Neon have?
a)
10
b)
20
c)
20.18
d)
0
29.
What is the atomic number of Boron?
a)
5
b)
11
c)
6
30.
What is the atomic mass of Boron?
a)
5
b)
11
c)
6
31.
How many protons does Boron have?
a)
5
b)
11
c)
6
32.
How many electrons does Boron have?
a)
5
b)
11
c)
6
33.
How many neutrons does Boron have?
a)
5
b)
11
c)
6
34.
What is the atomic number of sodium?
a)
11
b)
23
c)
12
35.
What is the atomic mass of sodium?
a)
11
b)
23
c)
12
36.
How many protons does Sodium have?
a)
11
b)
23
c)
12
37.
How many electrons does Sodium have?
a)
11
b)
23
c)
12
38.
How many neutrons does Sodium have?
a)
11
b)
23
c)
12
39.
What is the atomic number of Fluorine?
a)
9
b)
19
c)
10
40.
What is the atomic mass of Fluorine?
a)
9
b)
19
c)
10
41.
How many protons does Fluorine have?
a)
9
b)
19
c)
10
42.
How many electrons does Fluorine have?
a)
9
b)
19
c)
10
43.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
44.
The smallest unit of an element that still has the properties of that element is?
a)
a substance
b)
a mixture
c)
a compound
d)
an atom
45.
Which of these is a pure substance?
a)
bread
b)
table salt
c)
garden soil
d)
sea water
46.
Which of these is an example of a molecule?
a)
a small nugget of pure gold
b)
the smallest grain of salt in a salt shaker
c)
a small drop of sugar water
d)
two oxygen atoms joined to a carbon atom
47.
Which of these is an example of a molecule?
a)
a small nugget of pure gold
b)
the smallest grain of salt in a salt shaker
c)
a small drop of sugar water
d)
two oxygen atoms joined to a carbon atom
48.
Which of these is not an example of a molecule?
a)
CH4
b)
C
c)
C6H12O6
d)
H2O
49.
Which of these is a mixture?
a)
Uncooked chocolate chips and cookie dough blended together with a spoon.
b)
Distilled water
c)
A nugget of gold
d)
A molecule of Oxygen
50.
Two or more elements chemically combined:
a)
an atom
b)
a compound
c)
a mixture
d)
a pure substance
51.
This picture represents which of the following?
a)
Element
b)
Compound
c)
Mixture
52.
What is gold?
a)
element
b)
compound
c)
mixture
53.
What is water?
a)
element
b)
compound
c)
mixture
54.
A substance that cannot be broken down into any other substance by ordinarychemical means is called —
a)
molecule
b)
mixture
c)
element
d)
compound
55.
NaHCO3 is an example of —
a)
an abbreviation
b)
a compound
c)
a mixture
d)
an element
56.
A substance made of only one type of atom is called —
a)
an element
b)
a mixture
c)
a compound
d)
a salt
57.
Which of the following is a way in which elements and compounds are similar?
a)
Elements and compounds are pure substances.
b)
Elements and compounds are both made up of different kinds of atoms.
c)
Elements and compounds can both be broken down by physical means.
d)
Elements and compounds are listed on the periodic table.
58.
Two or more substances in the same place but NOT chemically combined or in a specific ratio is called —
a)
a compound
b)
a pure substance
c)
an element
d)
a mixture
59.
What is an example of an element?
a)
Oxygen
b)
Pure water
c)
Air
d)
Table salt
60.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
61.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
62.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
63.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
64.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
65.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
66.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
67.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
68.
Can an element be broken down into a simpler substance
a)
yes
b)
No
69.
Which of the following an element?
a)
Carbonic Acid
b)
Copper
c)
Iron and Copper
d)
Water
70.
which one can be found on the periodic table
a)
Compound
b)
Element
71.
compounds are chemically bounded together
a)
False
b)
true
c)
I don't know?
100 %
