1361719
Frage 1
Frage
Emulsifiers help water and oil mix.
Antworten
- True
- False
Frage 2
Frage
The hydrophilic end of each emulsifier molecule bonds to .......
Antworten
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Water molecules
-
Oil molecules
Frage 3
Frage
Ice cream is a food that contains an emulsifier.
Antworten
- True
- False
Frage 4
Frage
What do protein molecules do when they have been cooked?
Antworten
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Shrink
-
Expand
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Change shape
Frage 5
Frage
What happens when you cook a Potatoes?
Antworten
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The inside becomes soft and that makes the potatoes fluffy.
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The cell walls break down making the starch cells swell up and spread out.
Frage 6
Frage
What chemical reaction does baking powder undergo when heated?
Antworten
-
Incomplete combustion
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Thermal decomposition
Frage 7
Frage
What is the word equation for sodium hydrogen carbonate thermal decomposition?
Antworten
-
Sodium hydrogencarbonate - sodium carbonate + carbon dioxide + water
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Sodium hydrogen carbonate - sodium carbonate + oxygen + water
Frage 8
Frage
Baking powder is used in baking cakes, the carbon dioxide produced makes the cakes rise.
Antworten
- True
- False
Frage 9
Frage
Carbon dioxide can be detected using .....
Antworten
-
Bromine water
-
Limewater
Frage 10
Frage
Limewater turns cloudy when what is detected.....
Antworten
-
Oxygen
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Carbon dioxide
Frage 11
Frage
The word equation for making esters is:
Acid + alcohol - ester + water
Antworten
- True
- False
Frage 12
Frage
Identify the properties that perfumes need.
Antworten
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Non toxic
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Soluble in water
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Easily evaporates
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Flavourings
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Insoluble in water
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Doesn't react with water
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Doesn't irritate the skin
Frage 13
Frage
Polymers are short chains of molecules.
Antworten
- True
- False
Frage 14
Frage
Polymers are made by heating a catalyst and the double bond of small monomers breaks open and is able to join with another monomer.
Antworten
- True
- False
Frage 15
Frage
What is the reaction of making polymers called?
Antworten
-
Polymerisation
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Carbon based polymer
Frage 16
Frage
What is gore-tex?
Antworten
-
A breathable fabric that allows water to evaporate but doesn't let any water in.
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A stretchy fabric used to make clothes.
Frage 17
Frage
Most polymers aren't biodegradable, why is this a problem?
Antworten
-
They aren't broken down by micro organisms so they don't rot.
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Water ruins it.
Frage 18
Frage
Why do we cook food?
Antworten
-
Change taste, change texture, kill bacteria, easier to digest.
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Smells nicer, tastes nicer, kill bacteria.
Frage 19
Frage
What statements are correct about Alkanes.
Antworten
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They are made from only hydrogen and carbon atoms.
-
All Alkanes have single bonds.
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Alkanes are unsaturated compounds.
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Alkanes have double bonds.
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Alkanes are saturated compounds.
Frage 20
Frage
What is fractional distillation used for?
Antworten
-
Separating crude oil.
-
Preparing crude oil.
Frage 21
Frage
Is this the equation for incomplete combustion of a hydrocarbon?
Hydrocarbon + oxygen - carbon dioxide + water + carbon monoxide + acid
Antworten
- True
- False
Frage 22
Frage
How do you calculate energy?
Antworten
-
Mass x specific heat x temp = mcT
-
Weight x heat x volume = mcT
Frage 23
Frage
What is exothermic?
Antworten
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Heat given out.
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Heat taken in.
Frage 24
Frage
What is endothermic?
Antworten
-
Heat given out.
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Heat taken in.
Frage 25
Frage
Flavour enhances are a type of emulsifier.
Antworten
- True
- False
Frage 26
Frage
What are the environmental problems with oil?
Antworten
-
Oils spills.
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Wars.
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Acid rain.
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Global warming.
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Extinction.
Frage 27
Frage
Political problems with oil are .....
Antworten
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Wars over pipelines.
-
Global warming.
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Rise In oil prices.
Frage 28
Frage
You need heat and a catalyst to be able to perform cracking.
Antworten
- True
- False
Frage 29
Frage
What is cracking?
Antworten
-
The splitting up of long chain hydrocarbons.
-
Another name for fractional distillation.
Frage 30
Frage
Double covalent bonds Make up what kind of polymer?
Antworten
-
Addition polymer
-
Polymerisation.
Frage 31
Frage
What is crude oil formed from?
Antworten
-
The buried remains of plants and animals.
-
Buried rocks in the ocean.
Frage 32
Frage
What does cracking do?
Antworten
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Helps match supply to demand.
-
Makes more crude oil.
Frage 33
Frage
The word equation for complete combustion of any hydrocarbon is ....
Hydrocarbon + oxygen - carbon dioxide + water
Antworten
- True
- False
Frage 34
Frage
What is the definition of health?
Antworten
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A state of physical, social and mental well-being.
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Being free from infection and disease.
Frage 35
Frage
What is the definition of Fit?
Antworten
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A measure of how well you can perform a physical task.
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The same as health.
Frage 36
Frage
How do you measure fitness?
Antworten
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Strength
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Stamina
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Agility
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Flexibility
-
Speed
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Blood pressure
-
Age
Frage 37
Frage
Systolic pressure is when blood pressure is at its highest when the heart contracts.
Antworten
- True
- False
Frage 38
Frage
What is blood pressure measured in?
Antworten
-
mm of mercury
-
Cm
Frage 39
Frage
What can increase your blood pressure?
Antworten
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Smoking
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Being overweight
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Too much alcohol
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Constant stress
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Age
-
Unhealthy diet
Frage 40
Frage
What can health problems can high blood pressure lead to?
Antworten
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Strokes
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Kidney damage
-
Brain damage
-
Lung damage
Frage 41
Frage
Kwashiorkor is caused by eating too little protein.
Antworten
- True
- False
Frage 42
Frage
You calculate BMI using the following formulae:
BMI = body mass
(Height)2
Antworten
- True
- False
Frage 43
Frage
Types of pathogens:
Antworten
-
Fungi
-
Flu
-
Bacteria
-
Viruses
Frage 44
Frage
A malignant tumour is where the tumour grows and can spread to other sites in the body.
Antworten
- True
- False
Frage 45
Frage
Types of drugs:
Antworten
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Depressants
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Stimulants
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Coffee
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Painkillers
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Performance enhancers
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Hallucinogens
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