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Joesph Kling ∙
H2+Br2-->2HBr
It tells you how much of a molecule is made up of each element. - APEX
They identify what phase the substances are in
-Apex
The products
Decomposition reaction
Answer this question… Which of the following is the best definition of a physical change?
heat
In this reaction a change of bonds of the reactants occur: the general form is:AB + CD = AD + BC
CaCO3 -> CaO + CO2
2NaCl - 2Na + Cl2. apex
Phase change - apex