Quiz
AQA GCSE Chemistry 3.2
Dieses Quiz hat ein Zeitlimit und öffnet sich deshalb im gewohnten Player.
Fragen in diesem Quiz (20)
1True or false? Using hard water makes it more difficult for soap to lather.
- ARichtig
- BFalsch
2Which of these rocks helps to cause hardness in water?
- AGypsum
- BGranite
- CDolomite
- DCalcite
- EBasalt
3Which type of deposit forms when hard water reacts with soap?
- AScale, calcium carbonate
- BScum, calcium stearate
4Which type of deposit forms when hard water is boiled?
- AScale, calcium carbonate
- BScum, calcium stearate
5True or false? Calcium carbonate dissolves in carbonic acid (rainwater) to produce calcium ions and hydrogencarbonate ions.
- ARichtig
- BFalsch
6Which type of hard water can be softened by heating?
- APermanent hard water
- BTemporary hard water
7True or false? Scale is formed upon heating temporary hard water because calcium hydrogencarbonate forms a precipitate.
- ARichtig
- BFalsch
8Which of these methods can soften either type of hard water?
- AWashing soda
- BBoiling
- CIon-exchange column
9Which ion is exchanged with calcium and magnesium ions in an ion-exchange column?
- APotassium K+
- BSodium Na+
- CCadmium Cd2+
- DIron Fe3+
10True or false? Ion-exchange columns do not need to be regularly washed out with saline solution.
- ARichtig
- BFalsch
11What is the first stage in the water treatment process?
- APassing water through a sand filter for clear water
- BPassing water through metal meshes to remove large objects
- CChlorination of water to kill bacteria
- DAdding aluminium sulphate and lime to encourage flocculation of suspended particles in the water
12What is the second stage in the water treatment process?
- APassing water through a sand filter for clear water
- BPassing water through metal meshes to remove large objects
- CChlorination of water to kill bacteria
- DAdding aluminium sulphate and lime to encourage flocculation of suspended particles in the water
13What is the third stage in the water treatment process?
- APassing water through a sand filter for clear water
- BPassing water through metal meshes to remove large objects
- CChlorination of water to kill bacteria
- DAdding aluminium sulphate and lime to encourage flocculation of suspended particles in the water
14What is the fourth stage in the water treatment process?
- APassing water through a sand filter for clear water
- BPassing water through metal meshes to remove large objects
- CChlorination of water to kill bacteria
- DAdding aluminium sulphate and lime to encourage flocculation of suspended particles in the water
15What is often contained in a filter cartridge?
- AActivated carbon
- BActivated boron
- CIon-exchange column
- DFractionating column
- ESilver
- FRuthenium
16What are health benefits of drinking hard water?
- AReduced risk of heart disease
- BReduced risk of cancer
- CStronger muscles
- DStronger bones and teeth
17Which gas is sometimes used as an alternative to chlorine in killing bacteria?
- AFluorine
- BHydrogen sulphide
- COzone
- DMethane
18Which ion is sometimes added to water to reduce the risk of tooth decay?
- ASulphate, SO42-
- BFluoride, F-
- CNitrate, NO3-
- DPotassium, K+
19Which of these are arguments for the fluoridation of water?
- AReduction in tooth decay
- BIncreased risk of fluorosis
- CProtects people who don't have good dental hygiene
- DImpossible to set safe limits due to varied intake
- EEthical issues of being forced to take a treatment
- FReduced risk of heart disease
20Which of these are arguments against the fluoridation of water?
- AReduction in tooth decay
- BIncreased risk of fluorosis
- CProtects people who do not have good dental hygiene
- DImpossible to set safe limits due to varied intake
- EEthical issues with being forced to take a treatment
- FReduced risk of heart disease
Informationen
- Beschreibung
- Twenty questions on the second section of Unit 3 in AQA GCSE Chemistry: Water.
- Autor
- Matthew T
- Sprache
- English
- Aufrufe
- 208
- Schlagwörter
- Bewertung
- Noch keine Bewertungen Bewerte dieses Quiz