Definitions pt1

Question 1

Polarity

Answer 1

Having opposite poles which creates an uneven charge.

Question 2

Cohesion

Answer 2

Water is attracted to itself due to the charge from polarity and sticks to itself.

Question 3

Surface tension

Answer 3

Due to water’s cohesive tendency, while sticking together it forms a net on the surface.

Question 4

Adhesion

Answer 4

Water’s charge (caused by polarity) causes it to stick to other things.

Question 5

Capillary action

Answer 5

Because water sticks to itself (cohesion) and other things (adhesion) it is able to climb and defy gravity.

Question 6

Specific heat capacity

Answer 6

Water takes a long time to boil because it needs to reach a high heat before reaching the point necessary for phase change. Once it reaches this temperature it holds its heat.

Question 7

Universal solvent

Answer 7

Because water is polar and has both negative and positive charges, it is able to attract solute molecules and dissolve most substances.

Question 8

Density

Answer 8

Mass per unit of volume

Question 9

pH

Answer 9

A measure of the acidity or basicity of a solution. Measured on a scale from 0-14

Question 10

Steroid

Answer 10

Any of a large group of fat-soluble organic compounds containing a characteristic chemical ring system. Steroids signal chemical reactions and include the sterols, bile acids, and many hormones.