BIO 181 NAU- Exam 1 Study Guide
Solutions
Matter - ANSWER-Anything that occupies space and has a mass
Three Physical States of Matter - ANSWER-Solid, liquid, gas
Element - ANSWER-Substance that cannot be broken down into other substances by chemical
reactions
Four elements that make up about ...
Covalent Bond - ANSWER✔✔-Forms when two atoms SHARE one or more pairs of outer-shell electrons.
These bonds are the strongest of bonds.
Polar Molecules - ANSWER✔✔-An uneven distribution of charge Ex; H2O. Hydrogen are slightly positive,
oxygen is slightly negative.
Hydrogen Bond - ANSWER✔✔-A weak attraction between a partially positive hydrogen and a partially
negative atom like Oxygen. Causes cohesion
Cohesion - ANSWER✔✔-The tendency of molecules of the same kind to stick together. Ex; sipping
through a straw. In order for the water to be sucked up and stuck together is cohesion
Heat - ANSWER✔✔-The amount of energy associated wit hteh movement of the atoms and molecules in
a body of matter
Temperature - ANSWER✔✔-Measures the intensity of heat
Evaporative Cooling - ANSWER✔✔-Occurs when a substance evaporates and the surface of the liquid
remaining behind cools down. Ex; sweating
Aqueous Solution - ANSWER✔✔-When water is the solvent
Hydrophilic - ANSWER✔✔-Likes and will dissolve in water
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