Answer:
Energy is used to break bonds in reactants, and energy is released when new bonds form in products. ... In other chemical reactions, it takes more energy to break bonds in reactants than is released when bonds form in products. These reactions, called endothermic reactions, absorb energy.
Explanation:
Hydrogen burns with oxygen as in combustion reaction to form water.
H₂ + O₂ → H₂O
Answer:
2, 4, 1, 3, 5
Explanation:
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Answer:
This is true because oxygen belongs to the non-metal part of the periodic table.