UNIT 8 ACID AND ALKALI (SCIENCE YEAR 3)

Tick ( / ) one indicator we used to test the properties of acidid, alkaline and neutral substance.

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ACID will change BLUE litmus paper to

• red

• blue

• yellow

• green

ALKALI will change RED litmus paper to ____

• red

• blue

• yellow

What colour does RED litmus paper turn when added to an ALKALI?

• Blue

• Red

• Green

• Colourless

What colour does BLUE litmus paper turn when added to an ACID?

• Blue

• Red

• Green

• Colourless

The colour of both types of litmus paper does not change . It means the substance is _____

• acid

• alkali

• neutral

Salt is

• Acid

• Alkaline

• Neutral

Tell 3 things that contain acid

• Lemon, baking soda, water

• Water, tomato, vinegar

• Vinegar, hand soap, drain cleaner

• Vinegar, milk, hydrochloric acid

Tell 3 things contain alkali

• Lemon, milk, water

• Milk, household bleach, tomato

• Baking soda, toothpaste, drain cleaner

• Water, apple, banana

What is an example of neutral

• Tomato

• Water

• Milk

• Drain cleaner