Chemical Change

Physical change

reversible change in which no new substance is formed.

Chemical change

irreversible change in which new substance(s) is/are formed.

What is given/taken out in chemical reactions

Light and heat energy

Magnesium + oxygen

Magnesium oxide

hydrochloric acid

an aqueous solution of hydrogen chloride; a strongly corrosive acid

Sulfuric acid

Car batt

nitric acid

acid used especially in the production of fertilizers and explosives and rocket fuels

sodium hydroxide

a strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds

Aqueous ammonia

Fertilisers and window cleaning solution

calcium hydroxide

a caustic substance produced by heating limestone

Red litmus blue

Alkali

Blue litmus red

Acid

Ph 8-14

Alkali

Ph 0-6

Acid

hydrochloric acid + sodium hydroxide

Sodium chloride + water

Nitric acid + calcium hydroxide

Calcium nitrate

Nitric acid + calcium

Calcium nitrate + hydrogen gas

Acid + metal carbonate

Salt, water, carbon dioxide

Nitric acid + calcium carbonate

Calcium nitrate + water + carbon dioxide

Carbon dioxide test

Bubble gas into calcium hydroxide

combustion

Burning with oxygen

Thermal decomposition

Decomposition via heat

carbon monoxide

an odorless very poisonous gas that is a product of incomplete combustion of carbon respiratory issues

sulfur dioxide

a colorless toxic gas that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions respiratory issues

Oxides of nitrogen

Burning of fuels in high temp