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A-level Chemistry Year 1

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The electron configuration of element X is: 1s22s22p63s23p5

What is the formula of a compound formed when sodium reacts with element X?

 

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Which

statement best explains the meaning of the term ‘

relative atomic mass’.

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The electron configuration of element X is: 1s22s22p63s23p4

What is the formula of a compound formed when barium reacts with element X?

 

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Select each of the types of product that are formed when an acid reacts with a metal

carbonate

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Select

each of the types of product that are formed when HCl(aq) reacts with NH

3(aq)

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Acids react with bases, such as group 1 metal hydroxides, to give a salt and water.

The equation shows nitric acid reacting with lithium hydroxide.

HNO3 + LiOH → LiNO3 + H2O

 

True or false, the chemical equation shown above is balanced?

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