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19 Cards in this Set

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Hypothesis:
An educated guess.
Theory:
A conclusion that is well supported by data from many different scientist's experiments.
Law:
A conclusion that is well supported by data from many different scientist's experiments.
Experiment:
A controlled test.
Control:
A tested sample that is not exposed to the dependent variable.
Model:
A representation that serves to explain a scientific phenomenon.
Homeostasis:
The ability to maintain a constant state.
Atom:
The smallest component of an element having the chemical properties of the element.
Element:
A substance that cannot be separated into simpler substances.
Electrons:
Sub-atomic particle carrying a negative charge.
Neutrons:
Chargeless particle, typically found in the nucleus of an atom, with a weight similar to a proton.
Protons:
Positively charged sub-atomic particle that is located in the nucleus of an atom.
Ion:
Atom that carries a charge because it lost or gained one or more electrons
Molecule:
The smallest unit of a substance that can exist alone and retain the properties of that substance.
Chemical Reaction:
A change in the arrangement of atoms to create substances of different composition and properties.
Carbohydrate:
Sugars and starches that are the most efficient source of food energy. Contains carbon, hydrogen, and oxygen
Lipid:
A water-insoluble molecule which makes up fat.
Protein:
The major structural component of all body tissue, made of amino acids.
Nucleic Acid/Nucleotide:
A subunit of DNA or RNA