Atoms

What are the tiny particles that make up any matter?

• Molecules

• Electrons

• Atoms

• Protons

What is the atomic number of an element?

• The number of neutrons in the nucleus

• The number of electrons in the nucleus

• The number of protons in the nucleus

• The number of molecules in the nucleus

What is oxidation?

• The gain of electrons by the element

• The loss of electrons by the element

• The gain of electrons by the substance reduced

• The loss of electrons by the substance reduced

What are covalent compounds?

• Solids with high boiling points

• Gases or liquids with low boiling points

• Gases or liquids with high boiling points

• Solids with low boiling points

Who is considered to be the founder of modern atomic theory?

• Sir Isaac Newton

• John Dalton

• The ancient Greeks

• The Romans

Chemical changes involve a shifting of outer valence electrons.

• true

• false

The atomic weight of an element can vary due to differences in the number of neutrons in the nucleus.

• true

• false

Sir Isaac Newton was one of the last scientists to propose the theory that all matter is composed of atoms.

• true

• false

The word "atom" comes from the Greek word meaning "small."

• true

• false

An atom consists of three primary particles: electrons, protons, and neutrons.

• true

• false