Question 1

What is the smallest unit of an element that retains the properties of that element?

Accepted Answer

Atom

Answer

Compound

Answer

Molecule

Answer

Ion

Question 2

What is the center part of an atom called?

Accepted Answer

Nucleus

Answer

Electron

Answer

Proton

Answer

Neutron

Question 3

Which particle in an atom has a positive charge?

Accepted Answer

Proton

Answer

Neutron

Answer

Positron

Answer

Electron

Question 4

What is the overall charge of an atom that has an equal number of protons and electrons?

Accepted Answer

Neutral

Answer

Positive

Answer

Negative

Answer

Ionized

Question 5

What term describes the atoms of the same element that have different numbers of neutrons?

Accepted Answer

Isotopes

Answer

Ions

Answer

Molecules

Answer

Allotropes

Question 6

What is the charge of an electron?

Accepted Answer

Negative

Answer

Variable

Answer

Positive

Answer

Neutral

Question 7

Which part of the atom is responsible for chemical bonding?

Accepted Answer

Electron

Answer

Neutron

Answer

Nucleus

Answer

Proton

Question 8

What is the term for a substance made of two or more elements that are chemically bonded together?

Accepted Answer

Compound

Answer

Solution

Answer

Mixture

Answer

Element

Question 9

Who is credited with proposing the modern atomic theory in the early 1800s?

Accepted Answer

John Dalton

Answer

Albert Einstein

Answer

Erwin Schrödinger

Answer

Niels Bohr

Question 10

What is the term for atoms that have lost or gained electrons and thus have a charge?

Accepted Answer

Ion

Answer

Isotope

Answer

Molecule

Answer

Neutron

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