Fill in the blanks.
(a) Gold of 100% purity is _______ carat gold.
(b) Bronze contains the metals _______ and _______.
(c) The _______ gas is released when metals react chemically with acids
(d) Oxides of metals have _______ properties.
(e) The non-metal _______ is used in gun powder.
(a) Gold of 100% purity is 24 carat gold.
(b) Bronze contains the metals copper and tin
(c) The hydrogen gas is released when metals react chemically with acids
(d) Oxides of metals have basic properties.
(e) The non-metal sulphar is used in gun powder.
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