Acid and Bases

What is the pH of a strong acid?

• Typically less than 3

• Typically between 3 and 7

• Typically greater than 7

• Typically equal to 7

What is the pH of a strong base?

• Typically around 7

• Typically between 8 and 10

• Typically greater than 11

• Typically less than 5

What is the pH scale?

• A scale that measures temperature from 0 to 100 degrees Celsius.

• A scale that measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

• A scale used to measure the density of liquids.

• A scale that indicates the color of a solution based on its temperature.

What pH value indicates a neutral solution?

• A pH value of 6

• A pH value of 7

• A pH value of 8

• A pH value of 9

What happens when an acid reacts with a base?

• They explode, releasing gas and heat.

• They neutralize each other, producing water and a salt.

• They form a new acid and a new base.

• They remain unchanged and do not react.

Tags

NGSS.MS-PS1-2

What is the effect of dilution on the pH of an acid?

• Diluting an acid increases its concentration and decreases its pH, making it more acidic.

• Diluting an acid has no effect on its pH.

• Diluting an acid with water decreases its concentration and increases its pH, making it less acidic.

• Diluting an acid makes it completely neutral.

What is a strong acid?

• An acid that partially dissociates in water.

• An acid that completely dissociates in water, releasing all of its protons.

• An acid that does not dissociate in water at all.

• An acid that only dissociates at high temperatures.

What is a salt?

• A compound formed from the reaction of an acid and a base, consisting of cations from the base and anions from the acid.

• A type of mineral that is used for seasoning food.

• A liquid solution that contains dissolved ions.

• A solid substance that does not conduct electricity.

Tags

NGSS.MS-PS1-5

What is the pH of blood?

• 6.8

• 7.0

• 7.4

• 8.0

Tags

NGSS.HS-LS1-3

What is an acid?

• A substance that donates protons (H+) in a solution and has a pH less than 7.

• A substance that accepts protons (H+) in a solution and has a pH greater than 7.

• A neutral substance with a pH of 7 that does not donate or accept protons.

• A substance that increases the concentration of hydroxide ions (OH-) in a solution.