Term
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Definition
Use of the senses to gather
and record information about
structures or processes in the
natural world. |
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Term
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Definition
Recorded observations or
items of information. |
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Term
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Definition
A logical conclusion based on
observations (data). |
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Term
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Definition
Data that consists of recorded
measurements. |
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Term
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Definition
| Data in the form of descriptions. |
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Term
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Definition
Any event or object that
appears in the natural world
and is of scientific significance
or interest. |
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Term
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Definition
A general conclusion
supported by a large number
of observations or other data. |
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Term
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Definition
A suggested, testable answer
to a welldefined
scientific
question. |
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Term
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Definition
A proposed outcome based
on a given hypothesis. |
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Term
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Definition
A procedure designed to test
the validity of a given
hypothesis. |
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Term
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Definition
A factor or condition which
could affect the results of an
experiment. |
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Term
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Definition
A set or group in an
experiment which has or is
given the condition the
experiment is designed to test. |
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Term
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Definition
A set or group in an experiment
which has or is given the
contrasting condition to the one
the experiment is designed to
test. |
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Term
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Definition
An experiment that limits the
effects of variables so that only
one variable is being tested. |
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Term
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Definition
| Anything that takes up space and has mass. |
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Term
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Definition
| A pure substance that can not be broken down into other substances by chemical means. |
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Term
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Definition
| Any element that makes up less than 0.01% of the mass of a living organism but is critical to the health of the organism. |
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Term
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Definition
| A substance containing two or more different elements that are chemically combined together. |
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Term
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Definition
| The simplest particle of an element that retains all the properties of that element. |
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Term
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Definition
| A subatomic particle with a single unit of positive electric charge (+). |
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Term
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Definition
| A subatomic particle with a single unit of negative electric charge (-). |
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Term
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Definition
| A subatomic particle that has no charge (is electrically neutral). |
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Term
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Definition
| The central core of an atom that containsprotons and neutrons . |
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Term
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Definition
| The number of protons in an atom's nucleus. |
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Term
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Definition
| One of several forms of an element, each containing the same number of protons in their atoms but a different number of neutrons. |
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Term
| Radioactive Isotope(Radio-isotope) |
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Definition
| An isotope in which the nucleus decays (breaks down) over time, giving off radiation in the form of matter and energy. |
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Term
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Definition
| Two or more atoms held together by covalent bonds. |
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Term
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Definition
| An atom or group of atoms that has become electrically charged as a result of gaining or losing an electron(s). |
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Term
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Definition
| A chemical bond that occurs when an atom transfers an electron to another atom. |
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Term
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Definition
| A chemical bond that forms when two atoms share electrons. |
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Term
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Definition
| Breaking of old and formation of new chemical bonds that result in new substances. |
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Term
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Definition
| A compound or atom that is involved in a chemical reaction. |
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Term
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Definition
| New material created as a result of a chemical reaction. |
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Term
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Definition
A chemical reaction in which two different elements are bonded together forming a compound.
•
A + B AB |
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Term
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Definition
| A chemical reaction in which a compound is broken down into its elements. |
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Term
| Single Displacement Reaction |
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Definition
| A chemical reaction between an element and a compound which yields a different element and compound. |
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Term
| Double Displacement Reaction |
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Definition
| A chemical reaction between two compounds that yields two different compounds. |
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Term
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Definition
A molecule in which opposite
ends have opposite electric
charges . |
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Term
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Definition
| A bond created by the weak attraction of a slightly positive hydrogen atom to a slightly negative portion of another molecule. |
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Term
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Definition
| A tendency of molecules of the same kind to stick to one another. |
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Term
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Definition
| An attraction between unlike molecules. |
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Term
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Definition
| A uniform mixture of two or more substances. |
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Term
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Definition
| The part of a solution that dissolves the other substance and is present in the greater amount . |
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Term
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Definition
| The part of a solution that is dissolved and is present in a lesser amount . |
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Term
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Definition
| A solution in which water is the solvent. |
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Term
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Definition
| A compound that donates H+ ions to an aqueous solution and measures less than 7 on the pH scale. |
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Term
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Definition
| A compound that removes H+ ions from an aqueous solution and that measures more than 7 on the pH scale. |
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Term
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Definition
| A substance that maintains a fairly constant pH in a solution by accepting H+ ions when their levels rise and donating H+ ions when their levels fall. |
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Term
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Definition
| A molecule built upon a framework of carbon atoms. |
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Term
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Definition
| A non-carbon based molecule. |
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Term
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Definition
| A class of organic molecule composed of only carbon and hydrogen atoms. |
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Term
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Definition
| A group of atoms within a molecule that interacts in predictable ways. |
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Term
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Definition
| (Water Loving) A molecule that is attracted to water molecules. |
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Term
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Definition
| (Water Fearing) A molecule that repelled by water molecules. |
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Term
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Definition
| A small molecular unit that is the building block of a larger molecule. |
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Term
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Definition
| A molecule consisting of a long chain of smaller molecular units (monomers). |
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Term
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Definition
| A class of organic compounds based on sugar molecules. |
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Term
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Definition
| A monomer composed of a single sugar molecule. |
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Term
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Definition
| A sugar composed of two monosaccharides. |
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Term
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Definition
| A long polymer chain made up of simple sugar monomers. |
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Term
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Definition
| A polysaccharide in plant cells that consists entirely of glucose monomers. |
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Term
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Definition
| A polysaccharide in animal cells that consists of many glucose monomers. |
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Term
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Definition
| A polysaccharide consisting of glucose monomers that reinforces plant-cell walls. |
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Term
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Definition
| One of a class of water-avoiding (hydrophobic) compounds. |
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Term
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Definition
| An organic compound consisting of a three-carbon backbone (glycerol) attached to three fatty acids. |
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Term
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Definition
| A fat in which all three fatty acid chains contain no double bonds and hold the maximum possible number of hydrogen atoms. |
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Term
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Definition
| A lipid molecule with four fused carbon rings. |
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Term
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Definition
| A steroid molecule present in the plasma membranes of animal cells. |
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Term
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Definition
| A class of organic compounds that stores and carries important information used for cell function. |
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Term
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Definition
| A building block monomer of nucleic acid polymers. |
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Term
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Definition
| A nucleotide composed of a single or double ring of carbon and nitrogen atoms with attached functional groups. |
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Term
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Definition
| A 5-carbon sugar based on a ring-shaped framework. |
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Term
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Definition
| The pentose found in the bases that make up RNA. |
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Term
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Definition
| The pentose found in the bases that make up DNA. |
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Term
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Definition
| Family of nitrogenous based on a single ring of carbon and nitrogen atoms. |
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Term
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Definition
| Family of nitrogenous based on a double ring of carbon and nitrogen atoms. |
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Term
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Definition
| Term that describes the structure of DNA which consists of two strands of nucleotides wound about each other. |
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Term
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Definition
| Nucleotide bases that must pair with each other in nucleic acids. |
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