PH Level

According to Table 7.1, the pH of ammonia is:

• 3.0

• 4.5

• 8.3

• 11.0

According to Table 7.1, the pH of vinegar is:

• 2.0

• 2.2

• 8.3

• 12.4

Tags

NGSS.MS-PS1-2

According to Table 7.1, which of the following substances is the most acidic?

• Lye

• Pure water

• Milk

• Lemon juice

According to Table 7.1, which of the following substances is the most basic?

• Lye

• Bleach

• Baking soda

• Human blood

According to Table 7.1, which of the following substances is basic?

• Milk

• Baking soda

• Coffee

• Orange juice

What is the pH scale?

• The pH scale is a measure of time.

• The pH scale is a measure of volume.

• The pH scale is a measure of acidity or alkalinity of a solution.

• The pH scale is a measure of temperature.

What is the range of the pH scale?

• -1 to 1

• 0 to 14

• 10 to 20

• 100 to 200

What does a pH value of 7 indicate on the pH scale?

• Acidity

• Alkalinity

• Toxicity

• Neutrality

How does pH affect plant growth?

• pH has no effect on plant growth.

• pH affects plant growth by controlling the amount of sunlight plants receive.

• pH affects plant growth by changing the color of the leaves.

• pH affects plant growth by influencing nutrient availability.

Tags

NGSS.MS-LS1-5

How does pH buffering capacity help maintain stable pH levels in the ecosystem?

• pH buffering capacity helps maintain stable pH levels in the ecosystem by promoting the growth of acid-loving organisms.

• pH buffering capacity helps maintain stable pH levels in the ecosystem by neutralizing acids and bases.

• pH buffering capacity helps maintain stable pH levels in the ecosystem by preventing the formation of acids and bases.

• pH buffering capacity helps maintain stable pH levels in the ecosystem by resisting changes in pH when acids or bases are added.