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16 Cards in this Set
- Front
- Back
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Name a raw material used to make plastics. |
Crude oil. |
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Explain the term 'non-biodegradable'. |
Something cannot be broken down or rot. |
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Name the item of laboratory equipment shown in the diagram and name a second item of laboratory equipment which enables more accurate measurements of volume to be made. |
Measuring cylinder. Pipette. |
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Give two properties of alkali metals. |
Soft and shiny. |
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Explain the term 'covalent bond'. |
This is where two atoms share a pair of electrons. |
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Name a substance, other than water, that forms crystals. |
Copper sulfate. |
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Give one difference between crystalline and non-crystalline solids. |
Crystalline solids allow light to pass through powder. |
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Give the formula of a common base. |
NaOH. |
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Name a substance which is alkaline. |
Sodium hydroxide. |
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Distinguish between a concentrated and a dilute solution? |
Concentrated contains large amount of solute. Dilute contains small amount of solute. |
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Give the chemical name for marble. |
Calcium carbonate. |
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If a strip of moist blue litmus paper and a strip of moist red litmus paper are put into a jar of carbon dioxide what effect, if any, does the gas have on them? |
Both strips will be red, red litmus remains red, blue litmus turns red. |
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Describe a test that you could perform on water samples from flask and from flask B to compare their hardness. What result would you expect from this test? |
Test Shake the water with soap solution. Result Water in flask A does not form a lather easily with soap. |
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What causes hardness in water? |
Calcium and magnesium ions. |
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Name one of the processes carried out on water in a treatment plant. |
Chlorination. |
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Give a reason why the treatment that you have named is carried out. |
To kill bacteria. |
