chemistry acids bases and salts

What happens when an acid is dissolved in water

You get an acidic solution

What happens when a base dissolves in water

Becomes an alkaline solution

What is a solution that isn’t alkaline or acid

Neutral

Eg water

What’s an indicator

A substance that changes colour when added to an alkaline or acidic solution

Ph scale:

Less than 7 - acidic

7 - neutral

More than 7 - alkaline

Universal indicator

Changes colour to show the ph of a solution

What happens when acids dissolve in water

Produce hydrogen ions (sometimes called protons)

H +

What does (aq) stand for

Aqueous - means substance is a solution

What are acids made of

Acids are often produced from non metals eg sulfur oxides make sulfuric acids

What happens when alkalis dissolve

Produce hydroxide ions

OH -

Bases

Chemically opposite to an acid

Some dissolve in water (alkalis) some don’t (metal oxides)