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The smallest unit of a chemical element that can still retain the properties of that element *smallest unit of an element *it is part of everything *made of protons, electrons, and neutrons |
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A physical change that occurs when matter changes to another state (i.e. liquid, gas, or solid) *physical change *example: evaporation *example: liquid to gas |
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A reaction or a change in a substance produced by chemical means that results in producing a different chemical *chemical reaction *gas or energy is released *example: burning paper |
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A substance made up of a combination of 2 or more elements held together by chemical bonds that cannot be separated by physical means *2 or more elements *cannot be separated physically *example: water |
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A substance that cannot be reduced to a simpler substance by chemical means *made of atom(s) *example:hydrogen *example: oxygen |
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The process by which a liquid is converted to its vapor phase by heating the liquid *change of state *part of the water cycle *example: water steaming |
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One of the fundamental states of matter in which the molecules do not have a fixed volume or shape *example: oxygen *less dense than liquid *it's formed by evaporation |
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One of the fundamental states of matter with a definite volume but no definite shape *formed when a solid melts *example: water *less dense than a solid |
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The amount of matter an object contains *doesn't change *constant *measured in grams |
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A solid, liquid, or gas that possesses inertia and is capable of occupying space *everything is this *can be in any state *mass = the amount of this |
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The product of a thorough blending of 2 or more substances, not chemically combined *2 substances mixed *example: trail mix *can be separated by physical means |
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A reaction; a change in matter from one form to another without forming a new substance *usually reversible *new substance isn't formed *example: cutting paper |
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Having a definite shape and a definite volume *more dense than liquid *most dense form of matter *examples: rocks, ice |
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A mixture of 2 or more substances uniformly dispersed throughout a single phase *usually can be separated by physical means *liquids usually are separated by evaporation *example: Gatorade |
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A measure of the amount of space an object takes up; also the loudness of a sound or signal *measured in cubic terms *graduated cylinders can be used to measure this *also used to describe how loud something is, like a TV |
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a unit equal to the kilocalorie, used to express the heat output of an organism and the fuel or energy value of food *describes energy in food *people on diets watch how many of these they take in *expresses heat or energy |
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the decomposition of rocks by surface processes that change the chemical composition of the original material *rocks decompose *chemical composition is changed *hydrolysis is one example |
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an atom particle with negative charge *one of the parts that make an atom *negative charge *# can affect what element something is |
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having dissimilar alleles at corresponding chromosomal loci *different traits are inherited *sometimes one trait is more dominant *sometimes both traits combine, ex: the offspring of a white flower and red flower may be pink |
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having identical alleles at corresponding chromosomal loci *inheriting 2 of the same trait *example: offspring of 2 red flowers will be red *example: two traits of brown eyes will produce brown eyes |
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having no net electric charge; not electrified *neither acid nor base *example: water *example: milk |
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a part of the cell containing DNA and RNA and responsible for growth and reproduction *can also be the center of an atom *control center of a cell *located in the middle of a cell |
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a stable particle with positive charge equal to the negative charge of an electron *one of the parts that make an atom *positive charge *# can affect what element something is |
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