Get a slate, marker

1
Get a slate, marker eraser

• Take out your periodic table and a calculator

2
What is the atomic number of chromium?
24
3
What is the atomic mass of chromium?
51.996
4
What is the atomic symbol of neon?
Ne
5
What is the atomic mass of O2-?
15.999
6
How many protons are in an atom of O2-?
8
7
How many neutrons are in an atom of S2-?
16
8
How many electrons are in an atom of Mg2?
10
9
How many electrons are in an atom of Br-?
36
10
How many electrons are in an atom of As-3?
36
11
How many electrons are in an atom of H?
0
12
How many protons are in an atom of K?
19
13
How many protons are in an atom of carbon-14?
6
14
How many electrons are in an atom of lithium-6?
3
15
How many neutrons are in an atom of lead-209?
127
16
How many neutrons are in an atom of iron-57?
31
17
How many protons are in an atom of fluorine-20?
9
18
How many electrons are in an atom of fluorine-20?
9
19
How many neutrons are in an atom of fluorine-20?
11
20
A charged atom is called a/an
ion
21
Atoms of the same element that have different
atomic masses are called
isotopes
22
If the number of this subatomic particle changes,
the element changes
protons
23
If the number of this subatomic particle changes,
the charge changes
electrons
24
If the number of this subatomic particle changes,
the mass changes, but the element does not
neutrons
25
How many protons are in an atom of K-39?
19
26
How many neutrons are in an atom of K-39?
20
27
How many electrons are in an atom of K-39?
18
28
How many electrons are in an atom of S-332-?
18
29
How many protons are in an atom of S-332-?
16
30
How many neutrons are in an atom of S-332-?
17
31
How many electrons would fluorine gain/lose in a
reaction?
Gain 1
32
How many electrons would magnesium gain/lose in a
reaction?
Lose 2
33
How many electrons would aluminum gain/lose in a
reaction?
Lose 3
34
How many electrons would oxygen gain/lose in a
reaction?
Gain 2
35
How many electrons would lithium gain/lose in a
reaction?
Lose 1