SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hydrogen and oxygen
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water
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Either A or B
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None of the above
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Detailed explanation-1: -Formation of water from hydrogen and oxygen is a combination reaction because hydrogen and oxygen are combining to form single product. The reaction occurs as follows: 2H2(g)+O2(g)→2H2O(l)
Detailed explanation-2: -The formation of water from hydrogen and oxygen is a combination reaction.
Detailed explanation-3: -Formation of water is a chemical reaction because in this reaction a new compound is formed. It is also a combination reaction because hydrogen and oxygen combine to form a single product (water). The reaction is 2H2(g)+O2(g)→2H2O(l).
Detailed explanation-4: -To create water, oxygen and hydrogen atoms must be present. Mixing them together doesn’t help; you’re still left with just separate hydrogen and oxygen atoms. The orbits of each atom’s electrons must become linked, and to do that we must have a sudden burst of energy to get these things to hook up.