Material Changes

When you get a bee sting, what will you use to make you feel better ?

• Water

• Baking soda

• Milk

• Toothpaste

What is an example of neutral

• Vinegar

• Water

• Milk

• Drain cleaner

What is the meaning of the above hazard warning symbol?

• Corrosive

• Explosive

• Toxic

• Radioactive

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What colour does red litmus paper turn when added to an alkali?

• Blue

• Red

• Green

• Colourless

What kind of acid is present in your stomach?

• Sulfuric acid

• Hydrochloric acid

• Citric acid

• Nitric acid

Which of the following about properties of acid is not true?

• pH less than 7

• Tastes bitter

• Corrosive

• Turns blue litmus paper to red

Which of the properties of alkaline substance is NOT TRUE?

• taste bitter

• slippery

• turn red litmus paper to blue

• turn blue litmus paper to red

Which of the following will change the red litmus paper to blue?

• Sodium hydroxide

• Hydrochloric acid

• Sulphuric acid

• Nitric acid

Which of the following indicator will show different colour in acid, neutral and alkali?

• Phenolphtalein

• Universal indicator

• Methyl orange

• Litmus paper

alkali has pH value ________ than 7

• lower

• higher