Chemistry
Complete the following by choosing the correct answers from the bracket.
(a) An acid is a compound which when dissolved in water forms …………… (hydronium/hydroxide) ions as the positively charged ions.
(b) …………… (Al/Fe) metal is used in making alloys such as duralumin and magnalium.
(c) Cold and dilute nitric acid reacts with sulphur to form …………… (nitric oxide / nitrogen dioxide).
(d) Pure water consists almost entirely of …………… (ions/molecules/particles).
(e) One carbon atom in a hydrocarbon contain the root word as …………… (meth/eth).
Elements, Compounds & Mixtures
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Answer
(a) An acid is a compound which when dissolved in water forms hydronium ions as the positively charged ions.
(b) Al metal is used in making alloys such as duralumin and magnalium.
(c) Cold and dilute nitric acid reacts with sulphur to form nitrogen dioxide.
(d) Pure water consists almost entirely of molecules.
(e) One carbon atom in a hydrocarbon contain the root word as meth.
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