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Is the scientific study of matter, physical and chemical changes affecting matter and the energy changes that accompany those processes. |
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Scientists who study matter, its properties and changes. |
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Is the study of chemical reactions, such as growth, reproduction and respiration, that occur within a living organism. |
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Deals with all matter that is now living or was alive at one time. This is a study of matter containing carbon, which is present in all plants and animals. |
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Deals with matter that was never living and does not contain carbon. |
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Is anything that occupies space. |
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Matter with definite weight, volume and shape. EX: Skin |
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Matter with definite weight and volume, but no shape. EX: Lotions |
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Matter with definite weight, but indefinite volume and shape. EX: Air |
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Is a change in the physical form of a substance without creating a new substance possessing a distinct material composition. |
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Is a change in a substance that creates a new substance with different material characteristics from those of the original substance. |
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Is the process of a solid or gas changing states without becoming a liquid. |
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Is the ability to do work to accomplish some change. |
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Are basic units of matter that cannot be broken down into simpler substances by any chemical reaction. Are referred to as pure substances. EX: Hydrogen, Oxygen |
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The unifying concept used to organize elements and their similarities. |
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The number shown in the periodic table with each element is the elements ___ and indicates how many protons are in a single atom of the element. |
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(COHNS) Carbon C, Oxygen O, Hydrogen H, NItrogen N, Sulphur S |
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Components of major biologican molecules |
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Produce electrolytes responsible for fluid balance and nerve signal transmission |
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Potassium K, Sodium Na, Chlorine Cl |
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Zinc Zn, Stronium Sr, Iron Fe, Copper Cu, Cobalt Co, Manganese Mn |
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Essential trace metals in human metabolism |
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Cadmium Cd, Mercury Hg, Lead Pb |
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Inhalation or ingestion of these heavy metals can produce toxic effects. |
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Are the smallest complete unit of an element. Made up of three particles, Protons, Neutrons, Electrons |
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Have a positive electrical charge (+) and identify the atom as, example, a hydrogen atom or an oxygen atom. |
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Have no electrical charge. They are "neutrally charged". ___ & protons together determine the molecular weight (MW) of each element. |
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Have a negative electrical charge (-). Under certain circumstances, ______ enable atoms to unite with other atoms to form bonds. |
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Protons and neutrons are packed together tightly to form a dense core, at the center of the atom. |
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Is the name given to an electron in the outermost orbit that is easily moved from its orbit. If another atom has a shortage of electrons, ____ will attempt to move to the other atom. |
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Is the smallest particle of a compound that has all the chemical properties of that compound. When unstable atoms combine chemically by sharing electrons, ___ are formed. |
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Created by chemically uniting two different elements. |
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Formation of molecules that hold atoms together in compounds. |
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Three Major Biochemical Compound Groups |
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Proteins Carbohydrates Lipids |
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Basic materials the body uses help the body construct and renew itself. |
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Are materials that dissolve and break down large molecules into smaller ones. |
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Are carbon, oxygen, hydrogen and nitrogen that join together in chains to form proteins. There are 22 common amino acids, each with its own distinct chemical structure. |
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Is a bond uniting two amino acid groups. |
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Is thousands of amino acids connected lengthwise to form a chain. |
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Basic building-block molecules |
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Groups of monomers that bond together |
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Monomers & Polymers found in the body; are used by the body to store energy and play a key role in metabolism |
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A simple unit of a carbohydrate |
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Are two saccharides linked together. |
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Many saccharides linked together |
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Are made up of carbon (C), hydrogen (H) and oxygen (O) and are not formed by the linkage of basic molecule units like proteins and polysaccharides. |
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