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8th Science, 2nd Nine Weeks
Terms in this set (32)
The smallest particle into which an element can be divided and still be the same substance.
The positively charged particle of the nucleus
The particles of the that have no charge
The negatively charged particles found in all atoms
A theory of the mechanics of atoms, molecules, and other physical systems that are subject to the uncertainty principle
The regions inside an atom where electrons are likely to be found
periodic table of elements
A table of elements arranged by atomic number that shows patterns in their properties
a row of elements on the periodic table
Charged particles that form during chemical changes
Atoms that have the same number of protons but have different numbers of neutrons
Elements that are shiny and good conductors of heat and electricity
Elements that are dull and poor conductors of heat and electricity
A pure substance composed of two or more elements that are chemically combined
The number of protons in the nucleus of an atom
The weighted average of the masses of all the naturally occurring isotopes of an element
The force of attraction between oppositely charged ions
The force of attraction between the nuclei of atoms and the electrons shared by the atoms
Elements that have properties of both metals and nonmetals
A pure substance that cannot separated or broken down into simpler substances by physical or chemical means
The electrons in the outermost energy level of an atom
A column of elements on the periodic table
A change that affects one or more physical properties of a substance.
(Many physical changes are easy to undo)
A change that occurs when one or more substances are changed into entirely new substances with different properties.
(Cannot be reversed using physical means)
The starting materials in a chemical reaction.
Changes that occur in a nuclear structure.
The process by which multiple atomic particles join together to form a heavier nucleus.
Law of Conservation of Matter (mass
The law that states that mass is neither created nor destroyed in ordinary chemical and physical changes.
The process where a large atomic nucleus splits into two smaller nuclei.
Law of Conservation of Energy
The law that states that energy is neither created nor destroyed.
A physical or a chemical change in which energy is absorbed.
A physical or a chemical change in which energy is released or removed.
A shorthand description of a chemical reaction using chemical formulas and symbols.
THIS SET IS OFTEN IN FOLDERS WITH...
8th Science, 1st Nine Weeks
8th Science, 3rd Nine Weeks
8th Science, 4th Nine Weeks
6th Science, 2nd or 4th Nine Weeks
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