acids bases and salts

Acids are __________ in taste and change the color of blue litmus to __________.

sour; red

Bases are __________ in taste and change the color of red litmus to __________.

bitter; blue

__________ is a natural indicator extracted from lichen.

Litmus solution

When the litmus solution is neither acidic nor basic, its color is __________.

purple

Indicators like __________ and __________ can be used to test for acids and bases.

methyl orange; phenolphthalein

Acid + Metal → __________ + __________ gas.

Salt; Hydrogen

Acids react with metal carbonates to produce __________, __________, and __________.

salt; carbon dioxide; water

The neutralisation reaction can be summarized as __________ + __________ → __________ + __________.

Base; Acid; Salt; Water

The pH scale measures the __________ of hydrogen ions in a solution, where 0 is very acidic and 14 is very alkaline.

concentration

Diluting an acid involves mixing it with __________, which is an exothermic process.

water

An example of a strong acid that produces more H+ ions in solution is __________.

hydrochloric acid (HCl)

Sodium bicarbonate is commonly known as __________, which is a mild base that can neutralize excess stomach acid.

baking soda

The burning of candle near the gas produced from the reaction of an acid with a metal produces a __________, indicating __________.

popping sound; hydrogen gas

Water of crystallisation refers to the __________ of water molecules present in one formula unit of a salt.

fixed number

Plaster of Paris is obtained by heating __________.

gypsum (CaSO4.2H2O)

chlor alkali process