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More Acids and Bases:

Neutraliization -

When a base neutralizes an acid a solution containing salt is formed: E.g.

Hydrochloric Acid + Sodium Hydroxide --> Salt + water

This is neutralization. For example:

Sugar in your moulth produced acids which rot your teeth - toothpaste is alkaline so neutralises these acids

Acid in your stomach sometimes becomes a bit too concentrated. Indegestion tablets reduce the acidity. Also contain alkali, such as sodium hydrogencarbonte

Most plants grow best in soil that's nearly neutral. If soil is too acidic, farmers can adjust pH by adding lime or chalk to reduce acidity

Bee stings - rubbing calamine lotion containing zinc carbonate. Wasp stings are alkaline - neutralize by vinegar

ACID + BASE --> SALT + WATER

Acid- metal reaction:

Most metals react with acids. If mg is put into sulphuric acid, this reaction takes place:

Sulphuric acid + magnesium --> magnesium sulphate + HYDROGEN!

When these react:

Acid + metal --> salt + HYDROGEN are formed!!

Acid-carbonate

Hydrochloric acid + calcium carbonate --> ca;cium chloride + water + carbon dioxide

When these react:

acid + carbonate --> a salt + water + c02

Rain is naturally slightly acidic and eats into carbonate rocks such as limestone and chalk. Some polutants from factories and power stations make rain even more acidic

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