What are indicators

What are indicators used for

• Measuring density of substances

• Drinking

• Measuring strength of acids or alkalis

• Decoration

Are indicatiors safe to drink

• No

• Yes

• Could be

• IT IS DANGEROUS

How many colours does Universal indicator have?

• 1-14

• 3-10

• 2-11

• All of the above

Which numbers indicate the strongest acid, neutral, and strongest alkali

• 3, 8, 13

• 1, 7, 14

• 5, 9, 18

• 2, 6, 17

What other indicators can you make

• Beetroot indicator

• Red cabbage indicator

• Potato indicator

• Corn indicator

Which of these acids do you have at home?

• Citric acid

• Salicyclic acid

• Ethanoic acid

• Tannic acid

• Phosphoric acid

What products at home have alkali?

• Toothpaste

• Orange juice

• Milk

• Tea