Acids and Bases Review

A Base will have more _________________ ions.

• H₃O⁺

• OH^-

• H₂O

Tags

NGSS.HS-PS1-1

When water is added to a strong Acid, it will make it ________.

• stronger

• weaker

The pH paper indicates a ______________ solution.

• acid

• base

• neutral

The pH paper indicates a ______________ solution.

• acid

• base

• neutral

What is the pH of a strong acid?

• 1

• 7

• 14

• 6

Answer explanation

A strong acid has a pH close to 0, typically around 1, indicating a high concentration of hydrogen ions. A pH of 7 is neutral, and 14 is basic, while 6 is slightly acidic. Therefore, the correct answer is 1.

What is the colour of litmus paper in acid?

• blue litmus turns red

• red litmus turns blue

• blue litmus turns purple

• red litmus turns green

Answer explanation

In acidic solutions, blue litmus paper changes color to red, indicating the presence of acid. Therefore, the correct answer is 'blue litmus turns red'.

Which is most acidic?

• milk

• Lemon Juice

• bleach

Answer explanation

Lemon juice is the most acidic among the options, with a pH of around 2, while milk is neutral (pH 6-7) and bleach is alkaline (pH 12-13). Thus, lemon juice is the correct answer.

Acids taste .....

• sour

• bitter

• sweet

• umami

Tastes bitter.

• Acids

• Bases

• Salts

• All

Answer explanation

Bases are known for their bitter taste, while acids are sour and salts do not have a distinct taste. Therefore, the correct answer is 'Bases'.

What feels slippery?

• Acids

• Bases

• All

Answer explanation

Bases feel slippery due to their ability to react with oils and fats, creating a soapy texture. Acids do not have this slippery feel, making bases the correct choice.