Understanding pH and Water Properties

What is the pH value of pure water at 25°C?

• 0

• 7

• 14

• 1

Tags

NGSS.MS-ESS2-4

Which property allows water to dissolve many substances?

• High density

• Polarity

• Low boiling point

• Nonpolarity

What term describes water’s ability to stick to itself?

• Adhesion

• Cohesion

• Capillarity

• Surface tension

On the pH scale, which value represents a strongly acidic solution?

• 2

• 7

• 10

• 12

What is the chemical formula for water?

Which of the following best describes water’s heat capacity?

• Low

• High

• Zero

• Variable

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If a solution has a pH of 9, what type of solution is it?

• Acidic

• Neutral

• Basic

• Saturated

Which property of water is responsible for the meniscus seen in a graduated cylinder?

• Cohesion

• Adhesion

• Density

• Solubility

A student adds salt to water and observes it dissolving. Which property of water is being demonstrated?

• High surface tension

• Universal solvent

• High boiling point

• Low density

If you mix lemon juice (pH 2) with water (pH 7), what happens to the pH of the resulting solution?

• It becomes more acidic than lemon juice

• It becomes less acidic than lemon juice

• It becomes neutral

• It becomes basic