WorksheetsChemistry Practice
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
2.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
3.
What is the atomic number of this nucleus?
a)
1
b)
3
c)
4
d)
7
4.
What is the mass number of this nucleus?
a)
1
b)
3
c)
4
d)
7
5.
CALCIUM
a)
C
b)
Ca
c)
Cu
d)
Cl
6.
The element that occurs in highest percentage in the crust is
a)
Calcium
b)
Oxygen
c)
Iron
d)
Potassium
7.
Elements are represented by chemical symbol. Symbols are written with
a)
all lower case letters
b)
all capital letters
c)
always only one letter
d)
At least and ONLY one capital letter
8.
a)
2
b)
8
c)
3
d)
13
9.
a)
4
b)
6
c)
8
d)
10
10.
What is the atomic number for Lithium?
a)
3
b)
6.941
c)
3.941
d)
9.941
11.
What is the atomic mass for Potassium?
a)
19
b)
39.098
c)
20.098
d)
58.098
12.
How many protons does Carbon have
a)
12.011
b)
6.011
c)
6
d)
18.011
13.
a)
Periods
b)
Groups
14.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
15.
What does the atomic mass tell you?
a)
The number of electrons and protons
b)
The number of neutrons
c)
The number of protons and neutrons
d)
The number of protons
100 %
