WorksheetsDDM503_Basic Atomic Structure
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
For an atom to be electrically neutral, it must contain the same number of _____
a)
protons and neutrons
b)
neutrons and electrons
c)
protons and electrons
d)
nucleons and electrons
2.
The middle of the atom, which contains protons and neutrons, is called _____
a)
the shell
b)
the nucleus
c)
the cell
d)
the control center
3.
In the Bohr model of the atom, electrons can only be in certain _____
a)
shells
b)
nuclei
c)
frames
d)
circles
4.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
5.
Which of these phrases best describes an atom?
a)
a positive nucleus surrounded by a hard negative shell
b)
a positive nucleus surrounded by a cloud of negative charges
c)
a hard sphere with postive and negative charges on the outside
d)
a negative nucleus surrounded by protons and neutrons
6.
How many electrons does this atom have?
a)
2
b)
4
c)
6
d)
10
7.
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
8.
The mass number of an element that has 18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
9.
Principal element(s) that comprise human body is/are:
a)
hydorogen
b)
carbon
c)
oxygen
d)
yttrium
10.
Which of the following element is use as protection device in radiology?
a)
iodine
b)
barium
c)
tungsten
d)
lead
100 %
