Understanding Alkanes and Their Formulas

What are alkanes primarily composed of?

• Hydrogen and nitrogen atoms

• Carbon and hydrogen atoms

• Oxygen and nitrogen atoms

• Carbon and oxygen atoms

How can the number of hydrogen atoms in an alkane be calculated if the number of carbon atoms is known?

• Multiply the number of carbon atoms by three

• Subtract two from the number of carbon atoms

• Add two to the number of carbon atoms

• Multiply the number of carbon atoms by two and add two

In the caterpillar model, what does each body part represent?

• An oxygen atom

• A hydrogen atom

• A carbon atom

• A nitrogen atom

Using the caterpillar model, how many hydrogen atoms are there in propane?

• Twelve

• Ten

• Eight

• Six

What is the formula for butane as determined by the caterpillar model?

• C4H10

• C3H8

• C5H12

• C6H14