Term
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Definition
| a molecule that consists of 2 atoms |
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Term
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Definition
| a subatomic particle that has a very low mass and caries a single negative charge |
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Term
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Definition
| an expression showing the types of elements present and the simplest ratios of the different kinds of atoms |
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Term
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Definition
| the elements in a vertical column of the periodic table |
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Term
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Definition
| the elements in a vertical column of the periodic table |
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Term
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Definition
| the nonmetallic elements in group 7A (f,Cl,Br,I,&At) |
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Term
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Definition
| compounds that have a specific number of water molecules attached to them |
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Term
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Definition
| compounds other than organic compounds |
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Term
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Definition
| an atom or a group of atoms that has a net positive or negative charge |
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Term
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Definition
| any neutral compound containing cations and anions |
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Term
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Definition
| an ion that contains only one atom |
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Term
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Definition
| a subatomic particle that bears no net electric charge. its mass is slightly greater that its protons |
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Term
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Definition
| Nonmetallic elements in group 8A (He, Ne, Ar, Kr, Xe, Rn) |
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Term
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Definition
| elements that are usually poor conductors of heat and electricity |
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Term
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Definition
| the central core of an atom |
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Term
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Definition
| compounds that contain carbon, usually in combination with elements such as hydrogen, oxygen, nitrogen, and sulfur |
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Term
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Definition
| a horizontal row of the periodic table |
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Term
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Definition
| a horizontal row of the periodic table |
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Term
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Definition
| a tubular arrangement of the elements |
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Term
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Definition
| a molecule that consists of more than 2 atoms |
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Term
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Definition
| an ion that contains more than one atom |
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Term
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Definition
| a subatomic particle having a single positive electric charge. The mass of a proton is about 1840 times that of an electron |
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Term
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Definition
| a substance that yields hydrogen icons (H+)when it is dissolved in water |
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Term
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Definition
| the group 1A elements (Li, Na, K, Rb, Cs, and Fr) |
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Term
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Definition
| the group 2A elements (Be,Mg, Ca, Sr, Ba, and Ra) |
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Term
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Definition
| two or more forms of the same element that differ significantly in chemical and physical properties |
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Term
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Definition
| an ion with a net negative charge |
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Term
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Definition
| the basic unit of an element that can enter into chemical combination |
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Term
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Definition
| (z) the number of protons in the neucleus of an atom |
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Term
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Definition
| a substance that yields hydroxide ions (OH-)when dissolved in water |
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Term
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Definition
| compounds formed from just 2 elements |
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Term
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Definition
| an ion with a net positive charge |
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Term
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Definition
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Term
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Definition
| an ion with a net positive charge |
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Term
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Definition
| an expression showing the chemical composition of a compound in terms of the symbols for the atoms of the elements involved |
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Term
| law of conservation of mass |
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Definition
| the total quantity of energy in the universe is constant |
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Term
| law of definite proportions |
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Definition
| different samples of the same compound always contain it's constituent elements in the same proportions by mass |
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Term
| law of multiple proportions |
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Definition
| if 2 elements can combine to form more than one type of compound, the masses of one element that combine with a fixed mass of the other element are ratios of small whole numbers |
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Term
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Definition
| the total number of neutrons and protons present in the nucleus of an atom |
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Term
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Definition
| elements that are good conductors of heat and electricity and have the tendency to form positive ions in ionic compounds |
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Term
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Definition
| an element with properties intermediate between those of metal and nonmetals |
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Term
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Definition
| an expression showing the exact numbers of atoms of each element in a molecule |
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Term
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Definition
| an aggregate of at least two atoms in a definite arrangement held together by special forces |
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Term
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Definition
| the spontaneous breakdown of an atom by emission of particles and/or radiation. |
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Term
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Definition
| a chemical formula that shows how atoms are bonded to one another in a molecule |
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Term
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Definition
| compounds consisting of 3 elements |
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