Chemistry

Question 1

Decomposition Reaction

Answer 1

One reaction breaks into two or more products

Question 2

Thermal Decomposition Reaction

Answer 2

Require heat to break the bonds in the reactions

Question 3

Combination Reaction

Answer 3

Two or more reactants combine to form one product

Question 4

Precipitation Reaction

Answer 4

Two soluble reactants combine to form one insoluble product and a solution

Question 5

Neutralisation Reaction

Answer 5

An acid reacts with a base to produce salt and water

Question 6

Acids And Metals

Answer 6

Acids react with metals to form a salt (often solution) and hydrogen gas

Question 7

Acids And Carbonates

Answer 7

An acid added to a metal carbonate will produce a metal salt, carbon dioxide and water

Question 8

Displacement

Answer 8

A metal and a metal salt or acid combine to form a different metal salt and metal or H2

Question 9

Combustion

Answer 9

A fuel and oxygen combine to give carbon dioxide and water

Question 10

Example of a Decomposition Reaction

Answer 10

XY—–> X+Y

Question 11

Example of a Thermal Decomposition Reaction

Answer 11

XY –HEAT—> X+Y

Question 12

Example of a Combination Reaction

Answer 12

X+Y—–>XY

Question 13

Example of a Precipitation Reaction

Answer 13

AB(aq)+CD(aq) —> AD(s)+CB(aq)

Question 14

Example of a Neutralisation Reaction

Answer 14

HCl(aq)+NaOH(aq)—>H2O(l)+NaCl(aq)

Question 15

Example of an Acid and Metal Reaction

Answer 15

HCL(aq)+Zn(s)->ZnCl2(aq)+H2(g)

Question 16

Example of an Acid and Carbonate Reaction

Answer 16

Acid + carbonate—–> salt + CO2(g) + H2O(l)

Question 17

Example of a Displacement Reaction

Answer 17

Zinc + copper nitrate ——> Zinc nitrate + copper metal

Question 18

Example of a Combustion Reaction

Answer 18

Alcohol + Oxygen —> carbon dioxide +water