Chemistry Checkpoint #1

Hydrocarbons are compounds that contain

• 
  carbon, only

• carbon and hydrogen, only

• carbon, hydrogen, and oxygen, only

• 
  carbon, hydrogen, oxygen, and nitrogen, only

Which element must be present in an organic compound?

• carbon

• sulfur

• nitrogen

• oxygen

• hydrogen

Which images have the general formula C_n2_n+2 (Choose two)

• 
• 
• 
• 
• 

Which images are alkenes (Choose two)

• 
• 
• 
• 
• 

Identify the element in C₆H₁₂O₆ that allows it to be classified as an organic compound.

• Carbon

• Hydrogen

• Oxygen

• All of the above

The solvent 2-chloropropane can be made when chemists react propene with hydrogen chloride, as shown in the equation in the image.

Write the general formula for the homologous series to which propene belongs.

• C_nH_2n

• C_nH_2n-2

• C_nH_2n+2

• None of the above

A molecule of any organic compound has at least one

• 
  ionic bond

• 
  double bond

• oxygen atom

• carbon atom

Which element has atoms that can bond with each other to form ring, chain, and network structures?

• aluminum

• calcium

• carbon

• argon

Which formula represents a saturated hydrocarbon?

• C₂H₂

• 
  C₂H₄

•  C₆H₁₀

• C₆H₁₄

Which formula represents an alkane?

• C₂H₂

• C₂H₄

• C₃H₄

• C₃H₈