Chemistry Quiz

What is a molecule?

• The smallest unit of a compound

• When two or more atoms join together

• A special kind of bond between atoms

• A single atom by itself

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NGSS.MS-PS1-1

What happens in an ionic bond?

• Electrons are shared

• Electrons are transferred, creating positive and negative charges

• Neutrons are shared between atoms

• Protons are transferred between atoms

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NGSS.HS-PS1-3

Fill in the blank: The special electrons on the outermost layer of an atom are called _______________.

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NGSS.HS-PS1-1

Reactivity refers to how eager an atom is to lose protons.

• True

• False

Which term best describes the "glue" that holds atoms together to form molecules?

• Valence electrons

• Reactivity

• Bond

• Stability

Which of the following is an example of a compound?

• O₂ (oxygen gas)

• H₂O (water)

• Na (sodium)

• C (carbon)

Tags

NGSS.MS-PS1-1

Which of the following bonds involves atoms sticking together like magnets?

• Covalent Bond

• Ionic Bond

• Molecular Bond

• Reactivity Bond

A __________ is a substance made of two or more different elements bonded together.

Tags

NGSS.MS-PS1-1