3 February, 13:32
1. Hydrogen gas and oxygen gas, when combined, form liquid water. What type
of change is this, and why?
A) Chemical change, because a gas is produced.
B) Physical change, because it is changing from gas to liquid.
C) Chemical change, because a new substance is produced.
D) Physical change, because atoms are not gained or lost.
3 February, 14:49
because in chemical changes its involve specific chemical symbols and they form new substances
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» 1. Hydrogen gas and oxygen gas, when combined, form liquid water. What type of change is this, and why? A) Chemical change, because a gas is produced. B) Physical change, because it is changing from gas to liquid.