Question 1

What is the smallest unit of matter?

Accepted Answer

Atom

Answer

Element

Answer

Molecule

Answer

Compound

Question 2

What is the central part of an atom called?

Accepted Answer

Nucleus

Answer

Electron

Answer

Proton

Answer

Neutron

Question 3

What are the particles with a positive charge found in the nucleus?

Accepted Answer

Protons

Answer

Neutrons

Answer

Electrons

Answer

Positrons

Question 4

What are the particles with no charge found in the nucleus?

Accepted Answer

Neutrons

Answer

Electrons

Answer

Protons

Answer

Antineutrons

Question 5

What are the particles with a negative charge found outside the nucleus?

Accepted Answer

Electrons

Answer

Protons

Answer

Neutrons

Answer

Positrons

Question 6

What is the atomic number of an element?

Accepted Answer

Number of protons

Answer

Number of nucleons

Answer

Number of neutrons

Answer

Number of electrons

Question 7

What is the total number of protons and neutrons in the nucleus of an atom?

Accepted Answer

Mass number

Answer

Neutron number

Answer

Electron number

Answer

Atomic number

Question 8

What is an isotope?

Accepted Answer

Atoms of the same element with different numbers of neutrons

Answer

Atoms with the same number of protons and neutrons

Answer

Atoms of different elements with the same number of protons

Answer

Atoms with different numbers of protons

Question 9

What is an ion?

Accepted Answer

An atom with a net electric charge

Answer

An atom with a positive electric charge

Answer

An atom with a negative electric charge

Answer

An atom with no electric charge

Question 10

What is the electron configuration of an atom?

Accepted Answer

2, 8, 1

Answer

2, 8

Answer

10

Answer

11

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