Assessment: Molecules and Compounds

What is the symbol for the element CARBON?

• Ca

• Cn

• C

• CB

Which element has an ATOMIC NUMBER or 12?

• Magnesium

• Helium

• Gold

• Manganese

True or False?

Compounds are made of two or more different elements.

• True

• False

All of the following are compounds EXCEPT:

• H₂0

• CaO

• NH₃

• ^O₂

Tags

NGSS.MS-PS1-1

How many OXYGEN atoms are in sugar?

C₁₂H₂₂O₁₁

_{Number Only!}

(a)  

How many CALCIUM atoms are in Calcium Oxide?

CaO

_{Number Only!}

(a)  

How many HYDROGEN atoms are in baking soda?

NaHCO₃

_{Number Only!}

(a)  

Match the following MODEL with the correct formula.

• H₂O

• NH₄

• H₂O₂

• O₃

Match the following MODEL to the correct formula.

• NaHCO₃

• C₈H₁₈

• CO₂

• NaCl

Match the following MODEL with the correct formula.

• NH₃

• C₂H₆O

• CH₄

• H₂0