Question

Explain the following terms with
examples.
a. Endothermic reaction
b. Combination reaction
c. Balanced equation
d. Displacement reaction​

Answer 1

Explanation:

ENDOTHERMIC REACTION - An endothermic process is any process with an increase in the enthalpy H of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.

•Melting ice cubes.

•Melting solid salts.

COMBINATION REACTION - A combination reaction is a reaction where two or more elements or compounds combine to form a single compound. Such reactions are represented by equations of the following form: X + Y → XY. The combination of two or more elements to form one compound is called combination reaction.

•An example could be lithium reacting with sulfur to give lithium sulfide.

• When magnesium burns in air, the atoms of the metal combine with the gas oxygen to produce magnesium oxide.

BALANCED EQUATIONS - A chemical equation that has an equal amount of each element on the left and right sides.

•2H2+O2--->2H2O.

DISPLACEMENT REACTION - A single-displacement reaction, is a chemical reaction in which one element is replaced by another in a compound. It can be represented generically as: A + B-C → A-C + B This will most often occur if A is more reactive than B.

•zinc displacing iron ions from iron(II) sulfate solution.