Atoms, Elements, Molecules, and Compounds

What do we call a substance composed of atoms of a singular type?

• cell

• proton

• element

• atom

Which term represents the particle that is formed when 2 or more atoms come together as one?

• atoms

• elements

• molecules

• compounds

Tags

NGSS.MS-PS1-1

What is the term used for the substances that are formed when 2 or more atoms from differing elements come together?

• atoms

• elements

• molecules

• compounds

Tags

NGSS.MS-PS1-1

What does this picture portray?

• atom of an element

• elemental substance

• molecule of a compound

• nucleus of an atom

Tags

NGSS.MS-PS1-1

What does this picture portray?

• HOH

• H²O

• H₂O

• HO₂

Tags

NGSS.MS-PS1-1

Oxygen, nitrogen, hydrogen, and carbon are all examples of __________.

• molecules

• compounds

• atoms

• elements

Tags

NGSS.MS-PS1-1

Atomic mass is...

• The number of protons in an atom

• The number of neutrons in an atom

• The number of protons and neutrons in an atom

• The number of protons and electrons in an atom

Atomic number is...

• The number of protons in an atom

• The number of neutrons in an atom

• The number of neutrons and protons added together

• The number of protons and electrons in an atom

Which of the following is a chemical compound?

• NaCl

• hydrogen

• O₂

• Cl₂

Tags

NGSS.MS-PS1-1

How many protons does this atom of lithium have?

• 7

• 3

• 4

• 10

Tags

NGSS.MS-PS1-1