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ACT Science: Practice Set #2

Teacher: Mrs. S. Vandervort
Across
A chemical substance secreted by a gland of the body that affects change on other parts of the body
An atomic particle that has no charge
The amount of water vapor in the air
A negatively charged fundamental atomic particle
A substance that blocks the flow of heat or electricity
An animal that eats only plants
A molecule or atom that has become charged by either gaining or losing an electron
The temperature at which a substance changes from a solid to liquid state
A type of element with the same number of protons per atom but different number of neutrons
A simple sugar that provides energy to an organism
Down
The energy of an object in motion
Electromagnetic waves whose wavelength is longer than that of visible light
The area of the ecosystem where a plant or animal naturally lives
Wearing away, typically by running
The changing of liquid into gas