Organic Chemistry WS Name: ____________________________ #______Chemistry Block: __________

Directions: Circle the correct answer for the following multiple choice questions.

1. Which element must be present in a compound to be considered organic?

a. Nitrogenb. Carbonc. Oxygend. Hydrogen

2. Which of the following represents a saturated hydrocarbon?

a. Etheneb. Butanec. Propyned. All of the above

3. Which of the following compounds contains a double bond?

a. Ethaneb. Methanec. Ethyned. Ethene

4. Which statement correctly describes ethane and butane?

a. They have only single bondsb. They have the same number of

hydrogen atomsc. They have the same number of

carbon atomsd. They have only double bonds

5. Which of the following substances is a NATURAL polymer?

a. Kevlarb. Nylonc. Polythened. DNA

6. What is the general formula for an alkene?a. CnH2n+2

b. CnH2n

c. CnH2n-2

Directions: Name the following organic compounds from the chemical formula or structure.Chemical Formula/Structure Name

C4H10

C3H4

C2H4

C5H10

Directions: Write the chemical formula for the following organic compounds from the name.Name Chemical Formula

Pentane

Hexene

Ethyne

Propene

Nonane