Counting Atoms Formative Assessment

Which of the following is an example of an element?

• Na

• NaCl

• Sodium Chloride

• DNA

Which of the following is a pure substance that cannot be easily broken down?

• Compound

• Molecule

• Element

• Atom

What is H₂O is an example of?

• A compound

• An element

• An atom

• A cell

Tags

NGSS.MS-PS1-1

The smallest unit of matter that keeps the properties of a chemical element is a(n)...

• atom

• compound

• molecule

• cell

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Any group of atoms bonded together is a(n)...

• molecule

• element

• compound

• cell

Tags

NGSS.MS-PS1-1

How many atoms of hydrogen are in C₁₂H₂₂O_11?

• 12

• 22

• 11

• 35

Tags

NGSS.MS-PS1-1

How many carbon atoms are in CCl₄?

• 1

• 4

• 5

• 6

Tags

NGSS.MS-PS1-1

How many magnesium (Mg) atoms are in 3Mg(OH)₂

• 3

• 1

• 6

• 2

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in 2HNO₂?

• 2

• 4

• 6

• 7

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in methane, CH₄?

• 4

• 1

• 5

• 3

Tags

NGSS.MS-PS1-1