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Unit 2 Biology Vocabulary

total magnificationthe magnification of an object when it's viewed through a microscope
lengththe distance between two specified points
volumethe amount of space an object takes up
massthe amount of matter an object contains
temperatureamount of heat an object contains
atomthe basic unit of matter
nucleushe center of an atom, which contains the protons and neutrons
protonsare positive charge particles (+), same as atomic #
neutronsarry no charge at all
ionatom formed that has a change of electron
atomic numberthe number of protons in an atom
mass numberthe total number of protons and neutrons in the nucleus
elementpure substance that consists entirely of one type of atom
compoundis a substance formed by the chemical combination of 2 or more elements in definite proportions.
isotopeis a single element with the same # of protons but different # of neutrons.
ionic bondis formed when one or more electrons are moved, or transferred from one atom to another
covalent bonda type of a bond between atoms in which the electrons are shared
chargedesignated positive, negative, or zero, found on the elementary particles that make up all known matter
macromoleculemade up of molecules composed of many monomers
organiccompounds containing carbon and chiefly of biological origin
monomersmall chemical unit that makes up a polymer
polymermolecules composed of many monomers; makes up macromolecules
carbohydratecompound made up of carbon, hydrogen, and oxygen atoms
lipidmacromolecule mademostly from carbon and hydrogen atoms
nucleic acidmacromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
proteinmacromolecule that contains carbon, hydrogen, oxygen, and nitrogen
monosaccharidesimple sugar molecule
polymerizationmonomers join together to form polymers
nucleotidesubunit of which nucleic acids are composed
electronsa negatively charged particle located in the space surrounding the nucleus (-)

ESOL Teacher
Freedom High School

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