Quiz
C1
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Perguntas do quiz (36)
1[blank_start]Thermochromic[blank_end] pigments change colour when they are heated or cooled
- AThermochromic
2Which of the following are in paint?
- AA pigment
- BA Colour
- CA Chemical
- DA solvent
- EA binding medium
3Paint is a mixture of:
P[blank_start]igment[blank_end] - a substance that gives the paint its [blank_start]colour[blank_end]
B[blank_start]inding[blank_end] m[blank_start]edium[blank_end] - an [blank_start]oil[blank_end] that sticks the [blank_start]pigment[blank_end] to the [blank_start]surface[blank_end] it is being painted onto
S[blank_start]olvent[blank_end] - [blank_start]dissolves[blank_end] the thick [blank_start]binding[blank_end] [blank_start]medium[blank_end] and makes it [blank_start]thinner[blank_end] and easier to coat the surface- Aigment
- Bcolour
- Cinding
- Dedium
- Eoil
- Fpigment
- Gsurface
- Holvent
- Idissolves
- Jbinding
- Kmedium
- Lthinner
4[blank_start]Phosphorescent[blank_end] pigments glow in the dark. They [blank_start]absorb[blank_end] and store [blank_start]energy[blank_end] and release it slowly as light when it is [blank_start]dark[blank_end]. The paint on some [blank_start]watch[blank_end] [blank_start]dials[blank_end] contains phosphorescent pigments.
- APhosphorescent
- Babsorb
- Cenergy
- Ddark
- Ewatch
- Fdials
5The first 'glow in the dark' paints were made using [blank_start]radioactive[blank_end] materials as pigments. They were used to paint the [blank_start]dials[blank_end] on [blank_start]aircraft[blank_end] instrument panels and the first luminous [blank_start]watches[blank_end]. However, the people who painted with these pigments were exposed to too much [blank_start]radiation[blank_end] and some of them developed [blank_start]cancer[blank_end] as a result. Phosphorescent pigments are not [blank_start]radioactive[blank_end], which means they are much safer to use.
- Aradioactive
- Bdials
- Caircraft
- Dwatches
- Eradiation
- Fcancer
- Gradioactive
6An oil based paint such as a [blank_start]gloss[blank_end] paint dries in two stages:
1.) The [blank_start]solvent[blank_end] [blank_start]evaporates[blank_end] away
2.) The [blank_start]oil[blank_end] - [blank_start]binding[blank_end] medium [blank_start]reacts[blank_end] with [blank_start]oxygen[blank_end] in the air as it dries to form a [blank_start]hard[blank_end] layer. This is an [blank_start]oxidation[blank_end] reaction.- Agloss
- Bsolvent
- Cevaporates
- Doil
- Ebinding
- Foxygen
- Greacts
- Hhard
- Ioxidation
7Which of the following use thermochromic pigments?
- AGlow in the dark stars
- BMood rings that change colour as your body temperature rises
- CCups and kettles to warn when they are hot
- DWatch dials
- EBaby feeding spoons to show that the food is not too hot
- FBaby bath toys to show that the water is the correct temperature for the baby
8Thermochromic paints change to [blank_start]colourless[blank_end] as they get [blank_start]hotter[blank_end] and so the paint changes from the [blank_start]mixture[blank_end] colour to the ordinary [blank_start]pigment[blank_end] colour.
- Acolourless
- Bmixture
- Cpigment
- Dhotter
9Which of the below is the correct definition for soluble substances?
- ASubstances that dissolve in a liquid
- BSubstances that do not dissolve in a liquid
- CThe liquid into which a substance is dissolved
- DThe substance that gets dissolved
10Which of the following is the correct definition of insoluble substances?
- ASubstances that dissolve in a liquid
- BSubstances that do not dissolve in a liquid
- CThe liquid into which substance is dissolved
- DWhat you get when you mix a solvent and a solute
11What is the correct definition of a solvent?
- AThe liquid into which a substance is dissolved
- BSubstances that do not dissolve in a liquid
- CSubstances that dissolve in a liquid
12What is the correct definition of a solute?
- ASubstances that dissolve in a liquid
- BThe substance that gets dissolved
- CSubstances that do not dissolve in a liquid
13What is the correct definition of a solution
- AThe substance that gets dissolved
- BWhat you get when mix a solvent and a solute
- CThe liquid into which a substance is dissolved
14Water will not dissolve nail varnish because:
The attraction between [blank_start]water[blank_end] molecules is [blank_start]stronger[blank_end] than the [blank_start]attraction[blank_end] between water molecules and the [blank_start]particles[blank_end] in nail varnish
The [blank_start]attraction[blank_end] between the [blank_start]particles[blank_end] in nail varnish is [blank_start]stronger[blank_end] than the [blank_start]attraction[blank_end] between water molecules and particles in nail varnish- Awater
- Bstronger
- Cattraction
- Dparticles
- Eattraction
- Fparticles
- Gstronger
- Hattraction
15The particle size of the [blank_start]solids[blank_end] in a [blank_start]colloid[blank_end] must be very [blank_start]small[blank_end] so they stay scattered throughout the [blank_start]mixture[blank_end]. If the particles were too [blank_start]big[blank_end], they would start to settle down to the [blank_start]bottom[blank_end].
- Asolids
- Bcolloid
- Csmall
- Dmixture
- Ebig
- Fbottom
16Perfumes are [blank_start]volatile[blank_end], which means they [blank_start]evaporate[blank_end] [blank_start]easily[blank_end].
- Avolatile
- Bevaporate
- Ceasily
17What is the definition of volatile?
- AIt evaporates easily
- BIt has permeable walls
- CThe walls are semi permeable
18Perfumes are [blank_start]volatile[blank_end] : they [blank_start]evaporate[blank_end] [blank_start]easily[blank_end].
The [blank_start]molecules[blank_end] in a drop of perfume are held together by [blank_start]weak[blank_end] [blank_start]intermolecular[blank_end] [blank_start]forces[blank_end] of [blank_start]attraction[blank_end]. The molecules that escape have lots of [blank_start]energy[blank_end] and easily overcome the [blank_start]weak[blank_end] [blank_start]attraction[blank_end] to the other [blank_start]molecules[blank_end] in the liquid.- Avolatile
- Bevaporate
- Ceasily
- Dmolecules
- Eweak
- Fintermolecular
- Gforces
- Hattraction
- Ienergy
- Jweak
- Kattraction
- Lmolecules
19Cooking food causes a chemical change to take place. When a chemical change occurs:
When a chemical change occurs:
New [blank_start]substances[blank_end] are formed from [blank_start]old[blank_end] ones
There may be a change in [blank_start]mass[blank_end] when a [blank_start]gas[blank_end] is released
There is often a substantial [blank_start]energy[blank_end] change, e.g a [blank_start]rise[blank_end] or fall in temperature
The change cannot be [blank_start]reversed[blank_end] easily- Asubstances
- Bold
- Cmass
- Dgas
- Eenergy
- Frise
- Greversed
20The [blank_start]texture[blank_end] of eggs and meat [blank_start]changes[blank_end] when they are cooked because the [blank_start]protein[blank_end] [blank_start]molecules[blank_end] change [blank_start]shape[blank_end] [blank_start]permanently[blank_end].
Potatoes and other vegetables are plants; their cells have a [blank_start]rigid[blank_end] [blank_start]cell[blank_end] [blank_start]wall[blank_end]. During cooking, the heat [blank_start]breaks[blank_end] [blank_start]down[blank_end] this cell wall, [blank_start]starch[blank_end] is released and it becomes much [blank_start]softer[blank_end]. The starch grains [blank_start]swell[blank_end] up and [blank_start]spread[blank_end] out, and the potato is now much easier to [blank_start]digest[blank_end].- Atexture
- Bchanges
- Cprotein
- Dmolecules
- Eshape
- Fpermanently
- Grigid
- Hcell
- Iwall
- Jbreaks
- Kdown
- Lstarch
- Msofter
- Nswell
- Ospread
- Pdigest
21[blank_start]Oil[blank_end] and w[blank_start]ater[blank_end] do not mix. [blank_start]Emulsifiers[blank_end] are used to keep oil and water together
The molecules in an emulsifier have [blank_start]two[blank_end] ends. One end is [blank_start]hydrophilic[blank_end], which means it likes to be in water. The other end is [blank_start]hydrophobic[blank_end], which means it likes to be in oil. The emulsifier joins the droplets together and keeps them mixed.
The [blank_start]hydrophilic[blank_end] end of the emulsifier molecule bonds to the polar water molecules. The [blank_start]hydrophobic[blank_end] end of the emulsifier molecule bonds to the non - polar oil molecules- AOil
- Bater
- Ctwo
- DEmulsifiers
- Ehydrophilic
- Fhydrophobic
- Ghydrophilic
- Hhydrophobic
22Which is the correct definition for the hydrophilic end of an emulsifier molecule?
- AAttracted to water
- BAttracted to oil
23Which is the correct definition for the hydrophobic end of an emulsifier molecule?
- AAttracted to water
- BAttracted to oil
24Which of the following must a perfume do?
- ASmell nice
- BEvaporate easily so it can travel to your nose
- CDissolve in water so you can get rid of it
- DNot dissolve in water - otherwise would wash off
- ENot react with water- other would react with perspiration
- FNot irritate - otherwise it would be uncomfortable on the skin
- GNot be toxic - so it does not poison you
25A material that is put into food to improve it in some way is called a [blank_start]food[blank_end] [blank_start]additive[blank_end]
- Afood
- Badditive
26Esters are a common family of compounds used as [blank_start]synthetic[blank_end] [blank_start]perfumes[blank_end].
An ester is made by reacting an [blank_start]alcohol[blank_end] with an [blank_start]organic[blank_end] [blank_start]acid[blank_end]. This produces an [blank_start]ester[blank_end] and [blank_start]water[blank_end].
A simple ester, ethyl ethanoate is made by adding [blank_start]ethanoic[blank_end] [blank_start]acid[blank_end] to [blank_start]ethanol[blank_end].- Asynthetic
- Bperfumes
- Calcohol
- Dorganic
- Eacid
- Fester
- Gwater
- Hethanoic
- Iacid
- Jethanol
27Making an Ester:
[blank_start]Alcohol[blank_end] + [blank_start]Organic[blank_end] [blank_start]Acid[blank_end] ---------------> [blank_start]Ester[blank_end] + [blank_start]Water[blank_end]- AAlcohol
- BOrganic
- CAcid
- DEster
- EWater
28[blank_start]Antioxidants[blank_end] are materials that stop the food reacting with [blank_start]oxygen[blank_end] in the [blank_start]air[blank_end]. They are usually added to foods that contain [blank_start]fats[blank_end] or [blank_start]oils[blank_end], e.g. bacon.
Food colours improve the [blank_start]appearance[blank_end] of food
[blank_start]Flavour[blank_end] [blank_start]enhancers[blank_end] help bring out the [blank_start]flavour[blank_end] of the food [blank_start]without[blank_end] adding a taste of their own.
[blank_start]Emulsifiers[blank_end] help to mix ingredients which would normally [blank_start]separate[blank_end]. [blank_start]Salad[blank_end] [blank_start]dressing[blank_end] and mayonnaise contain emulsifiers- AAntioxidants
- Bfats
- Coxygen
- Dair
- Eoils
- Fappearance
- Gflavour
- Hwithout
- IFlavour
- Jenhancers
- KEmulsifiers
- Lseparate
- MSalad
- Ndressing
29Word equation for the decomposition of sodium hydrogencarbonate is:
Sodium
[blank_start]Hydrogen[blank_end]- ------------> [blank_start]Sodium[blank_end] [blank_start]Carbonate[blank_end] + [blank_start]water[blank_end] + [blank_start]Carbon[blank_end] [blank_start]Dioxide[blank_end]
Carbonate- AHydrogen
- Boxygen
- CSodium
- Dchloride
- ECarbonate
- Fcalcium
- Gwater
- Hnitrogen
- ICarbon
- JIron
- KDioxide
- LOxide
30Uses for polymers
Polythene or Poly(ethene):
Properties
[blank_start]Lightweight[blank_end]
Flexible
[blank_start]Easily[blank_end] [blank_start]Moulded[blank_end]
Uses:
[blank_start]Plastic[blank_end] [blank_start]bags[blank_end]
Moulded [blank_start]containers[blank_end]- ALightweight
- BPoor conductor of heat
- CWaterproof
- DEasily
- EMoulded
- Ftough
- GPlastic
- Hbags
- IBottles
- Jcontainers
31Uses for Polymers
Polystyrene ( expanded polystyrene):
Properties:
[blank_start]Lightweight[blank_end]
[blank_start]Poor[blank_end] [blank_start]conductor[blank_end] of [blank_start]heat[blank_end]
Uses:
[blank_start]Insulation[blank_end]
[blank_start]Damage[blank_end] [blank_start]protection[blank_end] in [blank_start]packaging[blank_end]- ALightweight
- BPoor
- Cconductor
- Dheat
- EInsulation
- FDamage
- Gprotection
- Hpackaging
32Uses for polymers
Nylon:
Properties:
Light[blank_start]weight[blank_end]
[blank_start]Water[blank_end]proof
[blank_start]Tough[blank_end]
Uses:
[blank_start]Clothing[blank_end]
[blank_start]Climbing[blank_end] [blank_start]ropes[blank_end]- Aweight
- BWater
- CTough
- DClothing
- EClimbing
- Fropes
33Uses for polymers:
Polyester:
Properties:
Light[blank_start]weight[blank_end]
Water[blank_start]proof[blank_end]
[blank_start]Tough[blank_end]
Uses:
C[blank_start]lothing[blank_end]
B[blank_start]ottles[blank_end]- Aweight
- Bproof
- CTough
- Dlothing
- Eottles
34Gore - Tex has a membrane of [blank_start]polyurethane[blank_end] or poly(tetraflurorethene) ( [blank_start]PTFE[blank_end] ) sandwiched between two [blank_start]layers[blank_end] of [blank_start]nylon[blank_end] [blank_start]fibres[blank_end]. The laminated PTFE has very tiny [blank_start]holes[blank_end] that allows water [blank_start]vapour[blank_end] to pass through but are too [blank_start]small[blank_end] to allow [blank_start]liquid[blank_end] water to pas through. The PTFE laminate is too [blank_start]weak[blank_end] and fragile to be used on its own.
- Apolyurethane
- BPTFE
- Clayers
- Dnylon
- Efibres
- Fholes
- Gvapour
- Hsmall
- Iliquid
- Jweak
35Gore - Tex is a breathable material made from [blank_start]nylon[blank_end]. It has all the advantages of nylon, but it is also treated with a material that allows [blank_start]perspiration[blank_end] (water vapour) to [blank_start]escape[blank_end] whilst preventing [blank_start]rain[blank_end] from getting in. It is far more comfortable for people who lead an active outdoor life, as it prevents them from getting [blank_start]wet[blank_end] when they perspire.
- Anylon
- Bperspiration
- Cescape
- Drain
- Ewet
36[blank_start]Polymers[blank_end] ( Plastics ), such as poly(chloroethene) ([blank_start]PVC[blank_end]) consist of a tangled mass of very [blank_start]long[blank_end]-[blank_start]chain[blank_end] molecules, in which the atoms are held together by [blank_start]strong[blank_end] [blank_start]convalent[blank_end] bond. The properties of a plastic depend on its [blank_start]structure[blank_end]
- APolymers
- BPVC
- Clong
- Dchain
- Estrong
- Fconvalent
- Gstructure
Informações
- Descrição
- GCSE Chemistry Quiz sobre C1, criado por Verity Cartwright em 07-06-2016.
- Autor
- Verity Cartwright
- Idioma
- English
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