Revisions AA+LS

what does sulfuric acid + copper oxide make?

• copper sulfide

• sulfuric copper

• copper sulfate

• copper sulfur

what colour is an acid?

• purple

• green

• blue

• red

what colour is an alkali?

• purple

• green

• red

• orange

what is the definition of neutralisation?

• A chemical reaction where an acid and alkali react together and cancel each other creating a neutral solution

• A chemical where an acid and water have reacted together creating a neutral solution

• A chemical where an alkali and water have reacted together creating a neutral solution

What is the chemical formula for water?

• H2O

• CO2

• NaCl

• CH4

what happens when an acid and alkali react?

• makes a

  salt+ water

• makes a salt only

• doesn't make anything

what pH would you expect hydrochloric acid to be?

• 9-12

• 3-6

• 1-3

• 6-9

How can we measure the pH of a solution?

• A ruler

• An indicator

• Hydrochloric acid

• Using an alkali

What does pH measure?

• The volume of substance

• How many molecules are present

• The acidity or alkalinity of a solution

What should yo always do before starting a practical?

• Took your chair under

• Wear goggles

• Tie hair back

• All of the above