WorksheetsAtomic Structure, Isotopes, & Atomic Mass
Total questions: 20
Worksheet time: 15mins
How many electrons does an uncharged (neutral) atom if neon have?
9
10
8
11
True or False: Neutrons have a negative charge.
True
False
What is an isotope?
Two atoms of the same element with different numbers of protons
A charged atom
A neutral atom
Two atoms of the same element with different numbers of neutrons
How many neutrons does this isotope of lithium have?
3
4
8
5
What is defined as one twelfth the mass of a carbon-12 atom?
Atomic mass
Atomic number
Mass number
Number of neutrons
Particles in an atom that are have no charge are
Protons
Electrons
Neutrons
Negatrons
What is the atomic number for an element with 3 protons?
2
3
6
1
What quantities vary between isotopes of an element?
Neutrons and mass number
Neutrons and electrons
Protons, electrons, and atomic number
Protons, electrons, and atomic mass
A neutral atom with atomic number 6 would have how many electrons?
3
6
1
2
The positive particles of an atom are
Protons
Electrons
Positrons
Neutrons
Which two components of an atom contribute to the mass?
Neutrons and electrons
Protons and neutrons
Protons and electrons
The central region of an atom, where its neutrons and protons are found, is called the
Nucleus
Center
Electron cloud
Core
What is the atomic mass of sulfur?
33
32.06
18.998
32
How many neutrons are in carbon-14?
8
14
7
6
All matter is made of what?
Electrons
Energy
Compounds
Atoms
In a correctly written symbol, what would be located in the "A" position?
Mass number
Number of neutrons
Number of electrons
Atomic number
In a correctly written symbol, what would be located in the "Z" position?
Mass number
Element's symbol
Number of electrons
Atomic number
In a correctly written symbol, what would "X" represent?
Mass number
Element symbol
Atomic number
Atomic mass
What is the mass number for iron?
26
55
55.847
56
How many protons does this isotope of titanium have?
22
70
48
26
