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6. crude oil is is mainly made up of
- oil
- hydrocarbons
- carbon
- oxygen
- hydrocarbonates
7. the name of a polymer if the molecules are packed more closely together
- heavy polymer
- crystalline polymer
- closed polymer
- crystal polymer
8. Insulin is produced in the
- pancreas
- stomach
- liver
- kidneys
9. why are additives put in food
- to make it more healthier
- to make it smell nice
- to stabilize, preserve
- to make people buy it
10. hair, muscle and haemogloblin conist mainly of
- carbon
- protein
- oxygen
- insulin