Year 11 - Organic chemistry part 1

What types of atoms do hydrocarbons contain?

• Hydrogen and Carbon

• Hydrogen, carbon and sulphur

• Hydrogen, carbon and nitrates

• Hydrogen, carbon and nitrogen

The homologous series with the general equation C_nH_2n+2 is called an ___________

An alkene contains which of the following?

• carbon atoms, hydrogen atoms and a single bond

• Carbon atoms and twice as many hydrogen atoms

• Carbon atom, hydrogen atoms and a double bond

• C_nH_2n

Bromine water turns from ___________ to clear in the presence of an alkene (double bond)

How many carbons atoms does pentane contain?

• 2

• 3

• 4

• 5

complete the word equation for the complete combustion of a hydrocarbon

Hydrocarbon + Oxygen --> Carbon dioxide + ____________

The properties of hydrocarbons change as the length of the hydrocarbon increases. Which of the following statements are true?

• The shorter the molecule the more runny it is

• The shorter the molecule the less viscous it is

• The shorter the molecule the lower the boiling point

• The shorter the molecule the more flammable it is

During fractional distillation the different fractions of crude oil are separated by their boiling point. Molecules with the highest boiling points separate at the ________ of the column

During fractional distillation crude oil is separated into its different fractions. Starting with the largest hydrocarbon, what order are the fractions produced in?

• LPG, petrol, kerosene, diesel, heavy fuel oil, bitumen

• petrol, diesel, kerosene, pentane, LPG

• bitumen, heavy fuel oil, diesel, kerosene, petrol, LPG

• Bitumen, diesel, petrol, heavy fuel oil, LPG

Cracking is when we take less________long chain molecules and break them into smaller, more useful chains