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Science Vocab
Chapt 2
33
Biology
10th Grade
09/20/2011

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Term
Monomers
Definition
Small compound units
Term
Polymers
Definition
Made when small and large compounds combine
Term
Carbohydrates
Definition
Compounds made up of carbon, hydrogen, and oxygen atoms
Term
Monosaccharides
Definition
Single sugar molecules
Term
Polysachharides
Definition
Large macromolecules formed from monosacchraides
Term
Lipids
Definition
Mostly made from carbon and hydrogen atoms
Term
Nucleic Acids
Definition
Macromolecules containing hydrogen
Term
Nucleotides
Definition
Polymers assembled from individual monomers
Term
Ribonucleic Acid and Deoxyribonucleic Acid
Definition
The two kinds of Nucleic Acids
Term
Protiens
Definition
Macromolecules that contain nitrogen, carbon, oxygen, and hydrogen
Term
Amino Acids
Definition
Polymers of molecules
Term
Atom
Definition
A basic unit of matter
Term
Nucleus
Definition
Strong forces that bind protons and neutrons together
Term
Electron
Definition
A negatively charged particle
Term
Element
Definition
A pure substance that consist entirely of one type of atom
Term
Isotope
Definition
Atoms of the same element that differ in number of neutrons
Term
Compound
Definition
A substance formed by a chemical compound
Term
Ionic Bond
Definition
Formed when one or more electrons are transferred from one atom to another
Term
Ion
Definition
Positively and negatively charged atoms
Term
Covalent Bond
Definition
Forms when electrons are shared between atoms
Term
Molecule
Definition
Smallest unit of most compounds
Term
Van Der Waals Forces
Definition
What scientists call the slight attraction developed between the oppositely charged regions of molecules
Term
Cohesion
Definition
An Attraction between molecules of the same substance
Term
Adhesion
Definition
An attraction between molecules of different substances
Term
Mixture
Definition
: A material composed of two or more elements or compounds that are physically mixed together but not chemically combined
Term
Solution
Definition
All the components are equally distributed
Term
Solute
Definition
The substance that is dissolved
Term
Solvent
Definition
The substance that solute dissolves
Term
Suspensions
Definition
Materials that do not dissolve when put into water
Term
PH scale
Definition
Indicates the concentration of H+ ions in a solution
Term
Acid
Definition
Any compound that forms H+ ions in a solution
Term
Base
Definition
A compound that produces hydroxide ions in a solution
Term
Buffers
Definition
Weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in PH.
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