Acids and pH Scale Quiz

What is an acid according to the document?

• A substance that donates electron pairs and accepts hydrogen protons.

• A substance that accepts electron pairs and donates hydrogen protons.

• A substance that only donates hydrogen protons.

• A substance that only accepts electron pairs.

What does the pH scale measure?

• The temperature of a solution.

• The acidity or basicity of a solution.

• The color of a solution.

• The density of a solution.

What pH value is considered neutral?

• 0

• 7

• 14

• 10

What happens to blue litmus paper when it is exposed to an acid?

• It turns green.

• It turns red.

• It turns blue.

• It turns yellow.

Which of the following is a characteristic of a base?

• It tastes sour.

• It turns red litmus paper blue.

• It has a pH less than 7.

• It reacts with metals to produce hydrogen gas.

What is the pH range of acidic solutions?

• 0 to 7

• 7 to 14

• 10 to 14

• 7 to 10

What is the effect of adding a base to an acidic solution?

• The solution remains unchanged.

• The pH increases.

• The solution becomes more acidic.

• The pH decreases.

​ (a)   conduct electricity and turn litmus paper red.

• Acids
• Bases
• Neutral solutions
• Salts

Answer explanation

Acidic solutions conduct electricity and turn litmus paper red.

Tags

hsps1b

HS-PS1-B

Acids, also known as ​ (a)   , will turn litmus paper ​ (b)   . This is because they have a pH ​ (c)   . They taste ​ (d)   .

• H+
• red
• below 7
• sour
• bitter
• above 7
• blue

An indicator is added to an aqueous solution with a pH value of 5.6. Pair each indicator with the correct color

• colorless

• Phenolphthalein

• yellow

• Methyl orange

• blue

• Bromcresol green