WorksheetsAtoms, Isotopes, and Ions Quiz Review
Total questions: 30
Worksheet time: 3hrs 30mins
What particles determine the mass number?
Protons and electrons
Electrons and neutrons
Protons and neutrons
Protons, neutrons, and electrons
What is the mass number of bromine?
35
45
80
79.904
The atomic number is equal to _.
the number of protons
the number of neutrons only
the total number of protons and neutrons
the number of protons, neutrons, and electrons
How many neutrons does this bromine atom have?
35
45
80
115
What is the mass number of this Neon atom?
10
11
21
20
How many electrons does this magnesium ion have?
24
12
10
14
What changes when an atom becomes an ion?
The number of electrons
The number of protons
The number of neutrons
Both the number of neutrons and electrons
How many neutrons does this Neon atom have?
21
11
10
12
What happened to this Magnesium atom to make it an ion?
It LOST electrons
It GAINED electrons
It GAINED protons
It LOST protons
What is the atomic number of this element?
12
24
23
35
Adding or subtracting neutrons makes the element change into
an ion
a mixture
an isotope
a neutral atom
What is the charge on a lithium atom that loses 1 electron?
+1
0
-1
-2
What is the atomic number of Fe? (click to see image)
26
55.845
56
30
What is the representation of an isotope?
Nitrogen
Al+3
Si
Phosphorus-33
Which atom contains exactly 15 protons?
sulfur - 32 (S)
phosphorus-32 (P)
oxygen-15 (O)
nitrogen-15 (N)
The nucleus of an atom consists of 8 protons and 6 neutrons. The total number of electrons present in a neutral atom of this element is
2
6
8
14
The nucleus of which atom is represented below?
Mg
Br
Al
Na
