Acid Base

Which of the following is a true for an acid?

• Blue Litmus paper staying blue

• Red Litmus paper staying red

• Phenolphthalein being purple

• Bromothymol blue turning blue

Tags

NGSS.MS-PS1-2

Products of a neutralization reaction are always:

• an acid and a base

• an acid and a salt

• salt and water

• salt and base

If the ph value is 5 what is the substance

• Acid

• Base

• Neutral

• Sweet

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are:

• pink and colourless

• blue and red

• red and blue

• colourless and pink

Which acid is present in your stomach

• Naoh

• Sulpher

• Hcl

• Salt

If the soil is acidic what we should do to make it neutral

• Add salt

• Add acid

• Add base

• Add sugar

Tags

NGSS.MS-PS1-2

Which is a natural indicator

• Phenoptyalin

• Sulpher

• Litmus

• Naoh

When acid is added to blue litmus paper the colour is

• Red

• Blue

• Green

• Yellow

When acid is added in litmus paper it turns _____.

• Yellow

• Red

• Blue

• Green

When a Base is added to litmus paper it turns _____.

• Blue

• Red

• Green

• Orange