Chemistry - Holt
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each of the black spaces below before clicking
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| Chemical Reaction | the process by which one or more substances change to produce one or more different substances
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| Reactant | a substance or molecule that participates in a chemical reaction
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| Product | a substance that froms in a chemical reaction
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| Matter | Anything that has mass and takes up space
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| Volume | a measure of the size of a body or region in three-dimensional space
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| Mass | a measure of the amount of matter in an object; a fundamental property of an object that is not affected by the forces that act on the object, such as the gravitational force.
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| Weight | a measure of the gravitational force exerted on an object; its value can cahnge with the location of the object in the universe.
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| Quantity | something that hs magnitude, size, or amount
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| Unit | a quantity adopted as a standard of measurement
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| Conversion factor | a ration that is derived from the equality of two different units and that can be used to convert from one unit to the other
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| Physical property | a characteristic of a substance that does not involve a chemical cahnge, such as density, color or hardness.
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| Density | the ration of the mass of a substance to the volume of the substance; often expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.
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| Chemical Property | A property of matter that describes a substance's ability to participate in chemical reactions
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| Atom | the smallest unit of an element that maintains the properties of that element
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| Pure substance | a sample of amtter, either a single element or a single compound, that has definite chemical and physical properties.
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| Element | A substance that cannot be separated or broken down into simpler substance by chemical means; all atoms of an elemetn have the same atomic number
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| Molecule | The smallest unit of a substance that keeps all of the physical and chemical properties of that substance; it can consist of one atom or two or more atoms bonded together.
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| Compound | a substance made up of atoms of two or more different elements joined by chemical bonds
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| Mixture | a combination of two or more substances taht are not chemically combined
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| Homogeneous | describes somethign that has a uniform structure or composition throughout
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| heterogeneous | composed of dissimilar components
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| What is Chemistry? | Chemistry is the study of chemicals, their properties, and the reactions in which they are involved.
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| What are the 3 states of matter? | Solid, liquid, and gas.
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| Mater has both --- and ---; matther thus has density, which is the rration of --- to ---. | mass and volume
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| SI units are used in science to express ---. | quantities.
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| ---- factors are used to change a given quantity from one unit to another unti | conversion
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