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Atom Definition Quiz

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Questions and Answers

What is the core of an atom made of?

Neutrons and electrons

Protons and electrons

Protons, neutrons, and electrons

Protons and neutrons (correct)

What is the number of protons in an atom called?

Atomic number (correct)

Electron number

Atomic mass

Neutron number

What are extremely small subatomic particles that orbit the nucleus in an electron cloud?

Ions

Protons

Electrons (correct)

Neutrons

Atoms can gain or lose electrons, or share electrons with other atoms in order to form what?

Covalent bond Signup and view all the answers

What subatomic particles are located in the nucleus with protons and have no charge?

Neutrons Signup and view all the answers

What is the smallest unit of matter that still holds the properties of an element?

Atom Signup and view all the answers

How many elements occur naturally?

92 Signup and view all the answers

What is the approximate size of an atom in meters?

$10^{-10}$ meters Signup and view all the answers

Which subatomic particle has a positive charge?

Proton Signup and view all the answers

What unit do scientists use to measure the mass of subatomic particles?

Atomic mass unit (amu) Signup and view all the answers