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OGT Science Terms

A substance that dissolves in water with the formation of hydrogen ions and reacts with a base to form a salt and water. It neutralizes alkalis, dissolves some metals, and turns litmus red; typically a corrosive and sour-tasing liquid. Acid
Adjustment to environmental conditions, modification of an organism or its parts that makes ot more fit for existence under the conditions of the environment. Adaptation
The smallest particle of an element that can exist either alone or in combination. Atom
A substance that dissolves in water with the formation of hydroxyl ions and reacts with an acid to form a salt and water; turn litmus paper blue. Base
Major ecological community (tropical rain forest, grassland or desert). Biome
A substance formed from two or more elements chemically united in fixed proportion. Compound
A variable whose values are determined by one or more (independent) variables. Dependent variable
Any of more than 100 fundamental substances that consist of atoms of only one kind and that singly or in combination constitute all matter. Element
The capacity of doing work, can be in various forms such as nuclear, sound, thermal, and light. Energy
The sum of the qualities and potentialities genetically derived from one's ancestors; the relation between successiveness generations, by which characteristics persist. Heredity
A state of equalibrium between different but interrelated functions or elements, as in an organism or group. Homeostasis
Any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior, but with differing atomic mass or mass number and different physical properties. Isotope
Energy associated with motion. Kinetic energy
The property of a body that is a measure of its inertia and that is commonly taken as a taken as a mesure of the amount of material it contains causing it to have weight in a gravitational field. Mass
Material substance that occupies space, has mass and is composed of atoms consisting of protons, neutrons, and electrons that constitutes the observable universe, and that is interchangeable with energy. Matter
The smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms. Molecule
The principle that in a given environment individuals having characteristics that and survival will produce more offspring, and the proprotion of individuals having such characteristics will increase with each succeeding generation. Natural selection
Compoiunds containing carbon and chiefly or ultimately of biological origin. Organic
The chemical process by which chlorphyll-containing plants use light to convert carbon dioxide and water into carbohydrates, releasing oxygen as a by product. Photosynthesis
The energy that matter has because of its position or because of the arrangement of atoms or parts. Potential energy
Involving the measurement of quantity or amount. Quantitative
Involving quality or kind. Qualitative
The physical and chemical processes by which an organism supplies its cells and tissues with the oxygen needed for metabolism and relieves them of the carbon dioxide formed in entergy-producing reactions. Respiration
Principles and procedures for the sytematic pursuit of knowledge involving the recognition and formulation of a problem, the collection of data through observation and experiment, and the formulation and testing of hypotheses. Scientific method
A quantity that may assume any one of a set of values. Variable
Created by: psnider@limacity
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