C1

Front 1

Food Additivies.

Back 1

1) Antioxidants.
2)Colours.
3)Emulsifiers.
4)Flavour enhancers.

Front 2

Antioxidants.

Back 2

Stop food from reacting with oxygen and turning bad.

Front 3

Ascorbic Acid

Back 3

(common name of a vitamin)

Front 4

Enhance

Back 4

Additives and sweetners are used to enhance.

Front 5

Toxicity

Back 5

Something that toxic , danger Etc: poison

Front 6

Active Packaging

Back 6

Actively changes the condition of packaged food to extend it life while maintaining the quality of the products.

Front 7

Intelligent packaging.

Back 7

Monitors the condition of packaged food and gives information on the quality of the packaged food using sensors and indicators.

Front 8

Catalyst

Back 8

Speeds up a reaction.
Causes a change.

Front 9

Detergent

Back 9

Hooks between oil and water

Front 10

Emulsion

Back 10

helps to break up fats and oils.

Front 11

What happens when food is cooked?

Back 11

chemicals change and change is irreversible

Front 12

What happens to a protein molecule when it is heated?

Back 12

it becomes denatured

Front 13

What is the chemical name of baking powder?

Back 13

sodiumhydrogencarbonate

Front 14

What is used in baking powder to make it rise?

Back 14

yeast

Front 15

When sodiumhydrogencarbonate decomposes it gives off what 3 things?

Back 15

sodium carbonate
carbon dioxide
water

Front 16

polymer

Back 16

a molecule with many repeating subunits such as starch

Front 17

emulsion

Back 17

when oil is 'hooked' onto water and pulled off-- used in dishwashing process, milk is an emulsion too

Front 18

colloid

Back 18

a mixture in which small particles of one substance are suspended in another; car exhaust

Front 19

two differnet names of smells

Back 19

pungent is a bad odor
scent is sweet

Front 20

2 ways to make perfume

Back 20

distilled
synthetic (chemical boiled to make an ester)

Front 21

how to make an ester

Back 21

alcohol + acid-> ester + water

Front 22

volotile

Back 22

when a liquid evaporates easily

Front 23

diffusion

Back 23

when gas particles move through air

Front 24

examples of esters

Back 24

nail varnish, perfume

Front 25

soluble

Back 25

a substance that disolves in a liquid; eg: sugar

Front 26

solvent

Back 26

the liquid that the thing disolves in

Front 27

solute

Back 27

same as soluble

Front 28

solution

Back 28

a solute and solvent that do not separate

Front 29

emulsifier

Back 29

chemical that helps break up fats; used in washing detergent

Front 30

hydrophilic head

Back 30

a water loving part of an emulsifying molecule

Front 31

hydrophobic tail

Back 31

water hating part of an emulsifying molecule that attracts oil

Front 32

What is test for carbon dioxide?

Back 32

pass gas through limewater and if it changes from colourless to cloudy then carbon dioxide is there

Front 33

decomposition reaction formula

Back 33

heat
sodium hydrogencarbonate -> sodium carbonate + carbon dioxide + water

Front 34

catalyst

Back 34

a chemical that speeds up a reaction

Front 35

name 3 fossil fuels

Back 35

coal, gas, oil

Front 36

How are fossil fules made?

Back 36

They are dead animals and plants squashed together over milions of years

Front 37

What do dead plants form?

Back 37

coal

Front 38

What do dead animals make?

Back 38

crude oil

Front 39

fractional distillation

Back 39

sepparating crude oil by heating up, then cooling down. Each fraction has different boiling points

Front 40

finite resourses

Back 40

fossil fuels that are no longer being made

Front 41

non-renewable

Back 41

sources cannot be made again

Front 42

cracking

Back 42

breaking down big molcules into smaller molecules which can be used for more things; eg: paraffin can be broken down to petrol