Act Prep Vocabulary

lowest-possible temperature, approximately -273 degrees

• absolute zero
• ecological succession
• diffusion
• carcinogen

compound with a pH less than 7

• boiling point
• catalyst
• acid
• conducter

a substance composed of two or more metals

• base
• control
• alloy
• chlorophyll

a sequence of changes in the plant or animal life of a region or habitat

• ecological succession
• conductor
• acid
• barometer

scattering of light

• alloy
• carbohydrate
• base
• diffusion

the movement of liquid through a membrane

• neutron
• proton
• vapor
• osmosis

a simple sugar that provides energy to an organism

• erosion
• ion
• glucose
• insulator

electromagnetic waves with wavelength shorter than that of visible light

• ultraviolet radiation
• pH
• starch
• hormone

the energy of an object in motion

• kinetic energy
• humidity
• evaporation
• erosion

the gaseous for of liquid

• humidity
• evaporation
• vapor
• water