Biology 6.3

Question 1

Polar molecule

Answer 1

Molecules that have unequal distribution of charges, meaning oppositely charged regions

Question 2

Hydrogen bond

Answer 2

Weak interaction involving a hydrogen atom and a fluorine/oxygen/nitrogen atom

Question 3

Mixture

Answer 3

A combination of 2+ substances in which each substance retains its individual characteristics + properties

Question 4

Solution

Answer 4

Another name for a homogenous mixture

Question 5

Solvent

Answer 5

A substance in which another substance is dissolved

Question 6

Solute (defined)

Answer 6

The substance that is dissolved in the solvent

Question 7

Acid

Answer 7

Substances that release hydrogen ions when dissolved in water

Question 8

Base

Answer 8

Substances that release hydroxide ions (OH subscript -) when dissolved in water

Question 9

pH

Answer 9

The measure of hydrogen ions in a solution

Question 10

Buffer

Answer 10

Mixtures that can react with acids or bases to keep to pH within a certain range

Question 11

Homogenous

Answer 11

When a mixture has uniform composition throughout

Question 12

Heterogenous

Answer 12

Mixture’s components remain distinct

Question 13

Suspension

Answer 13

A type of HETEROgenous mixture: the particles settle out over time

Question 14

Colloid

Answer 14

A heterogeneous mixture in which the particles do NOT settle out