| A | B |
|---|
| biology | the study of living things |
| scientific method | the principles and procedures for the systematic pursuit of knowledge based on logic and experimentation. |
| observation | receiving knowledge of the outside world through our senses |
| hypothesis | a statement that predicts the outcome of an experiment. |
| controlled experiment | an experiment in which only a single variable is changed at a time |
| control group | the experimental group that is used to compare the experimental group against. |
| independent variable | variable that is intentionally changed by the experimenter. |
| dependent variable | the variable that changes because of the intentionally changed variable; the variable that is recorded. |
| scientific law | a statement based on repeated experimental observations that describes some aspect of the universe. |
| scientific theory | is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method. |
| atom | Smallest unit of matter. |
| electron | neutron & proton |
| neutrons and protons | the subatomic particle(s) located in the nucleus of the atom |
| electrons | the subatomic particle(s) located in atomic orbitals and are involved in forming bonds between atoms. |
| molecule | any two or more atoms bonded together; the atoms involved may be the same or different. |
| compound | any two of more different atoms bonded together in specific proportions. |
| element | a pure substance made up of the same type of atom. |
| cells | smallest unit of life |
| homeostasis | regulated internal environment |
| evolve | ability for a species to change over generations |
| unicellular | term for single-celled organisms |
| multicellular | organisms made up of many different cells that work together |
| specialized cells | cells that are different from one another |
| non-polar covalent | bond in which electrons are shared equally |
| polar covalent | bond in which electrons are shared unequally |
| hydrogen bond | bond formed from the attraction between a positively charged hydrogen and a negatively charged atom of a different molecule. |
| H2O | Chemical formula of water |
| cohesion | molecules of two like substances are attracted to one another; water molecules attracted to other water molecules. |
| adhesion | molecules of two unlike substances are attracted to one another; water molecules attracted to other substances such as glass. |
| evaporative cooling | this term refers to the property of water in which water cools as it evaporates. |
| capillary action | property of water in which water can move upwards through a narrow tube; allows water to travel from the roots of a plant to its leaves. |
| surface tension | tension along the surface of a non-moving body of water; allows small insects to walk on water. |
| solution | A substance made up of a dissolved substance in water. |
| solute | In a solution |
| solvent | In a solution |
| hydrophobic | term means "water-fearing"; characteristic of non-polar molecules |
| hydrophilic | term means "water-loving"; characteristic of polar molecules |
