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Science Test 1
Test 1 Unit 1
29
Science
9th Grade
09/30/2013

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Term
Atom
Definition
Basic unit of matter
Term
Adhesion
Definition
attraction between molecules of different subjects
Term
Amino Acid
Definition
Compound with amino group on one end and a carboxyl group on the other end
Term
Compound
Definition
substance formed by combining 2 or more elements
Term
Covalent Bond
Definition
bond formed by the sharing of electrons between atoms
Term
Cohesion
Definition
attraction between molecules of the same substance
Term
Carbohydrate
Definition
compound of Carbon, Hydrogen, and Oxygen atoms
Term
DNA
Definition
nucleic acid that contains the sugar deoxyribose
Term
Electron
Definition
negatively charged particle located outside of the nucleus
Term
Element
Definition
substance containing of entirely one atom
Term
Isotope
Definition
atom of an element that has a number of neutrons that another atom of the same elements
Term
Ion
Definition
atom that has a positive or negative charge
Term
Ionic Bond
Definition
bond formed when one or more electrons are transferred from one atom to another
Term
lipid
Definition
micromolecule that is entirely hydrogen and carbon
Term
molecule
Definition
smallest unit of most compounds
Term
mixture
Definition
two or more elements/compounds combined physically.
Term
monomer
Definition
units that join together to make polymers
Term
monosaccharide
Definition
a single sugar molecule
Term
nucleus
Definition
the center of an atom
Term
nucleic acid
Definition
macro molecule containing Hydrogen, Oxygen, Nitrogen, Carbon and Phosphorus
Term
nucleotide
Definition
monomer of nucleic acids made of a 5-carbon sugar, a phosphate group, and a nitrogenous base.
Term
Polymer
Definition
a compound of many monomers
Term
polysaccharide
Definition
large macromolecule formed from monosaccharides
Term
protein
Definition
macromolecule containing Carbon, Hydrogen, Oxygen, Nitrogen
Term
RNA
Definition
single stranded nucleic acid that contains sugar ribose
Term
Solution
Definition
mixture of 2 or more substances where molecules are distributed evenly
Term
Solute
Definition
substance dissolved in a solvent to make a solution
Term
solvent
Definition
substance solute is dissolved in to make a solution
Term
suspension
Definition
mixture of water and non-dissolved materials
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