Structure, properties and uses (C2)

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Chlorine gas in highly poisonous. Explain why it is safe to use sodium chloride for cooking.
The chlorine in sodium chloride is reacted with sodium to make new substances with different properties
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Sodium chloride dissolves in water, but polyvinyl chloride is used to make window frames. Explain why polyvinyl chloride is used to make window frames.
Polyvinyl chloride has different properties from sodium chloride and doesn't dissolve in water.
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Chlorine gas is bubbled into drinking water to kill bacteria, but drinking water does not harm people. Explain why this is.
Enough is used to kill bacteria, but not enough to kill people.
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Sodium chloride can be in the form of a sodium chloride lattice. How many chloride ions are attached to each sodium ion?
6
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Sodium chloride has a melting point of approximately 800 degrees celcius, but the molecule hydrogen chloride is a gas at room temperature. Explain why.
Sodium chloride has a crystal lattice but hydrogen chloride does not. It is easier to separate hydrogen chloride molecules from each other, but much harder to separate the sodium and chloride ions of sodium chloride.
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Two electrodes, one positive and one negative, are placed in some molten sodium chloride, and a current passes through. Describe how the sodium and chloride ions react.
Sodium goes to the negative electrode and chlorine goes to the positive electrode. At the negative electrode, sodium forms; at the positive electrode, chlorine gas molecules are made.
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Sodium sulfate is and ionic compound. Write the formulae of the two ions in sodium sulfate (Na2SO4).
Na+ and SO4 -2
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Calculate the relative formula mass for sodium sulfate. (Relative atomic masses (Ar): Na= 23, O= 16, S= 32
(23x2) + 32 + (16x4) = 142
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What is a 'covalent' bond?
A shared pair of electrons.
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Other cards in this set

Card 2

Front

Sodium chloride dissolves in water, but polyvinyl chloride is used to make window frames. Explain why polyvinyl chloride is used to make window frames.

Back

Polyvinyl chloride has different properties from sodium chloride and doesn't dissolve in water.

Card 3

Front

Chlorine gas is bubbled into drinking water to kill bacteria, but drinking water does not harm people. Explain why this is.

Back

Preview of the front of card 3

Card 4

Front

Sodium chloride can be in the form of a sodium chloride lattice. How many chloride ions are attached to each sodium ion?

Back

Preview of the front of card 4

Card 5

Front

Sodium chloride has a melting point of approximately 800 degrees celcius, but the molecule hydrogen chloride is a gas at room temperature. Explain why.

Back

Preview of the front of card 5
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