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PS: Unit 7 Review

Total questions: 39

Worksheet time: 50mins

Name
Class
Date
1.

What does each square on the periodic table show? Check all that apply.

a)

Name

b)

Symbol

c)

Mass number

d)

Atomic number

e)

Atomic mass

2.

What can an atom be broken down into? Check all that apply.

a)

Positives

b)

Protons

c)

Electrons

d)

Neutrons

e)

Negatives

3.

What is a row called?

a)

Group

b)

Row

c)

Period

d)

Column

4.

How many periods are there in the periodic table?

a)

7

b)

18

c)

9

d)

16

5.

What is a column (up - down) called?

a)

Group

b)

Row

c)

Period

d)

Column

6.

How many groups are there in the periodic table?

a)

7

b)

18

c)

9

d)

16

7.

How is the periodic table read?

a)

Left to right

b)

Right to left

c)

Up to down

d)

Down to up

8.

Which of the following contribute to the mass of an atom? Check all that apply.

a)

Protons

b)

Neutrons

c)

Electrons

9.

Which part of an atom is the smallest?

a)

Proton

b)

Neutron

c)

Electron

10.

What is the atomic mass of hydrogen?

a)

1.008

b)

4

c)

1

d)

4.003

11.

Which part of the atom never changes, unless we want to change the element?

a)

Proton

b)

Neutron

c)

Electron

12.

What is the charge of a proton?

a)

Positive

b)

Neutral

c)

Negative

13.

What is the charge of an electron?

a)

Positive

b)

Neutral

c)

Negative

14.

What is the charge of a neutron?

a)

Positive

b)

Neutral

c)

Negative

15.

What is the atomic number of the attached element?

a)

47

b)

108

c)

107.8682

d)

107

16.

True or False: The atomic mass indicates the number of protons.

a)

True

b)

False

17.

What is the center of an atom called?

a)

nucleus

b)

electron cloud

c)

proton center

d)

photon center

18.
Beryllium has how many protons?
a)
4
b)
9.0122
c)
2
d)
13.0122
19.
What element is this?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
20.
What element is this model showing?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
21.
What does an atom's period tell us?
a)
Number of protons
b)
Number of electrons
c)
Number of valence electrons
d)
Number of shells
22.
What does an atom's group tell us?
a)
Number of protons
b)
Number of electrons
c)
Number of valence electrons
d)
Number of shells
23.
The following element has _______________ neutrons.
a)
15
b)
16
c)
31
d)
46
24.
How many valence electrons are in an atom of Ba?
a)
2
b)
8
c)
4
d)
1
25.
How many valence electrons are in an atom of Se?
a)
2
b)
8
c)
6
d)
5
26.
How many valence electrons are in an atom of K?
a)
3
b)
8
c)
4
d)
1
27.
Which group has the greatest number of valence electrons?
a)
1
b)
14
c)
18
d)
16
28.
How many valence electrons are found in atoms of group 14?
a)
4
b)
3
c)
14
d)
16
29.
How many valence electrons are found in atoms of aluminum?
a)
6
b)
3
c)
13
d)
16
30.

What is a positive ion called?

a)

anion

b)

cation

c)

isotope

d)

covalent

31.

What is a negative ion called?

a)

anion

b)

cation

c)

covalent

d)

isotope

32.

How many electrons would a Nitrogen ion gain/lose? If it has 5 valence electrons.

a)

lose 5

b)

gain 5

c)

lose 3

d)

gain 3

33.

How many electrons would a Calcium ion gain/lose? If it has 2 valence electrons.

a)

lose 1

b)

gain 1

c)

lose 2

d)

gain 2

34.

If an atom loses electrons, the charge will be positive.

a)

true

b)

false

35.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
36.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

37.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
38.

Cations are...

a)

Positive

b)

Negative

c)

Neutral

39.

Anions are...

a)

Positive

b)

Negative

c)

Neutral

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