Unit 2: Properties of Water Review

Match the definition with the appropriate word:

• pH Scale

• Technique to determine concentration of a solute.

• acid

• Substance that donates protons (H+) in solution.

• Titration

• pH level of pure water.

• base

• Substance that accepts protons (H+) in solution.

• 7

• Scale used to measure acidity or alkalinity.

Match the definition with the appropriate word:

• Hydrogen Bond

• Attraction between molecules of the same substance.

• Covalent Bond

• Chemical bond formed by sharing electron pairs.

• Cohesion

• Attraction between different substances.

• Ionic Bond

• Bond formed by the transfer of electrons.

• Adhesion

• Weak bond between hydrogen and electronegative atom.

Match the definition with the appropriate word:

• Solute

• A combination of two or more substances that are not chemically combined

• Suspension

• Mixture where particles are dispersed but not dissolved.

• Solubility

• A measure of how much solute can dissolve in a given solvent at a given temperature.

• Mixture

• Substance that dissolves a solute in a solution.

• Solvent

• Substance dissolved in a solvent to form a solution.

Buffers are ​ (a)   that can react with​ strong acids and bases to ​ (b)   .

• weak acids or weak bases
• strong acids and weak bases
• increase the effect of the base
• prevent sudden changes in pH
• keep solutions neutral

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

Tags

NGSS.5-PS1-3

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

Tags

NGSS.5-PS1-3

Which solution releases H+ in solution?

• Base
• Acid
• Buffer
• Water

A solution with a pH of 3.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

Tags

NGSS.5-PS1-3

A solution with a pH of 8.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension