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4 Topic

Chemistry of Life

QuestionAnswer
chemistry the study of matter and the changes that take place within matter
particle an organized piece of matter that is a small piece of something larger
molecule the smallest piece of a compound
compound a pure substance made from atoms of two or more types of elements chemically combine
atom the smallest piece of an element
element a pure substance made of only one type of atom
subatomic particles the building-blocks of atoms
nucleus the center of an atom, made of protons and neutrons
neutron part of the nucleus of an atom that has a neutral charge
proton part of the nucleus of an atom that has a positive charge
electron part of an atom “orbiting” the nucleus, it has a negative charge
periodic table of elements organized display of chemical elements telling useful information about each element
atomic number the number of protons in an element (and the normal number of electrons)
chemical symbol the short-hand abbreviation of an elemen
chemical name the full name of an element
atomic weight the mass of one mole of an element, equal to the total number of protons plus neutrons in one atom
mole a very large number: 6.02 x 10 to the 23, which is used to count very small things such as atoms and molecules
biological molecules the four basic building blocks of living things: carbohydrates, proteins, lipids, and nucleic acids
carbohydrate biological molecule that is the main chemical used to release energy in mitochondria
lipid biological molecule that is used to make cell membranes and for storage of chemical energy
protein biological molecule that is used to build cell parts and to do jobs for the cell
nucleic acid biological molecule that stores the codes for how to make and run the cell
chemical indicator a liquid that changes color or appearance when mixed with certain substance
Created by: deirdrek827
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