Atoms and Elements Quiz

Which of these is not a subatomic particle of an atom?

• proton

• electron

• neutron

• molecule

What does the atomic number tell us? (select all correct answers)

• the number of protons

• the number of protons and electrons

• the number of protons and neutrons

• the number of neutrons

What does the mass number tell us?
(a)  

• the number of protons and neutrons
• the number of protons
• the number of neutrons
• the number of protons and electrons

What is the atomic number of this atom?

Mathematical Equivalence

ON

What is the mass number of this atom?

• 1

• 3

• 4

• 7

How many electrons are in an neutral atom with an atomic number of 50?

Mathematical Equivalence

ON

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

ALL atoms of the same element have:

• same number of proton

• same number of nucleon

• different number of neutron

• different number of electron

A fluorine atom has 9 protons and 10 neutrons. What is the atomic number of fluorine?

• 9
• 10
• 19
• 1

A phosphorus atom has 15 protons and 16 neutrons. What is the mass number?

• 15
• 16
• 31
• 1