Science test

Cohesion

the attraction between molecules of the same substance (like water sticking to water). 

Adhesion

the attraction between molecules of different substances (like water sticking to a leaf)

Specific Heat Capacity

The amount of energy needed to raise 1 Kg of a substance by 1 degree

High specific heat capacity =

slow temp change

Low specific heat capacity =

fast temp change

Q

heat energy

M

mass

C

specific heat capacity

Δ T

change in temp

unit for heat energy

J (Joules)

unit for mass

Kg (Kilogram)

unit for specific heat capacity

J/kg⋅°C

unit for temperature

°C - Celsius

Hydrogen Bonds

A hydrogen bond is a weak attraction between a slightly positive hydrogen atom and a slightly negative oxygen atom.

Capillary Action

Capillary action is the movement of water through a narrow space, often against gravity.

hydrophobic

Hydrophobic means a substance does not mix with or dissolve in water.

hydrophilic

Hydrophilic means a substance mixes with or dissolves in water.

osmosis

Osmosis is the movement of water molecules from an area of high water concentration to an area of low water concentration, through a partially permeable membrane.