Acids and Alkalis Test Review

Which of these hazard symbols means "harmful to the environment"?

• 
• 
• 
• 

Which of these hazard symbols means "flammable"?

• 
• 
• 
• 

Which of these hazard symbols means "corrosive"?

• 
• 
• 
• 

If a solution had a pH of less than 7, what type of substance would it be?

• acid

• neutral

• alkali

• salt

What type of substances have a pH of more than 7?

• acids

• neutral

• alkalis

• salts

What colour is litmus indicator in acids?

• orange

• red

• blue

• purple

What colour is litmus indicator in alkalis?

• orange

• red

• blue

• purple

What colour is methyl orange indicator in acids?

• orange

• red

• yellow

• purple

What colour is methyl orange indicator in alkalis?

• orange

• red

• yellow

• purple

What colour is universal indicator in alkalis?

• orange

• red

• yellow

• purple