Atoms, molecules & compounds

How many different elements are represented in the compound?
ClH₂O₂

• 2
• 3
• 1
• 4

Tags

NGSS.MS-PS1-1

How many different elements are represented in the compound?
Fe₃O₄

• 2
• 3
• 1
• 4

Tags

NGSS.MS-PS1-1

Two oxygen atoms bond together, which vocabulary word best describes this type of matter?

• molecule

• compound

• compound and molecule

• atom

Tags

NGSS.MS-PS1-1

H₂O is most accurately described as a ___________________.

• molecule

• compound

• element

• atom

Tags

NGSS.MS-PS1-1

Which vocabulary words can be used to describe this image? (select TWO correct answers)

• molecule

• compound

• element

• atom

• mixture

Tags

NGSS.MS-PS1-1

There are ​ (a)   types of elements in this molecule. There are ​ ​ (b)   atoms in this molecule. This molecule ​ (c)   a compound.

• 2
• 3
• is
• is not
• 1
• 0
• 4

Tags

NGSS.MS-PS1-1

Which one of the following is a compound?

• NaCl

• O₂

• H

• He₂

Tags

NGSS.MS-PS1-1

Which of these models can be described as a compound?

• water

• carbon dioxide

• amonia

• methane

• All of them are compounds

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NGSS.MS-PS1-1

Which of these is only a molecule and not a compound?

• a

• b

• c

• d

Tags

NGSS.MS-PS1-1

The smallest particle that makes up all matter is called -

• an atom

• an element

• a compound

• a substance

• a molecule

Tags

NGSS.MS-PS1-1