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15 Cards in this Set
- Front
- Back
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Matter
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matter is anything that has mass and take up space.
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Chemistry
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Chemistry is the study of the properties of matter and how matter changes.
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Substance
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A substance is a single kind of matter that is pure, it always has a specific makeup-or compostion-and a specific set of properties.
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Two properties of matter are?
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Every form of matter has two kinds properties-physical properties and chemical properties.
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Physical property
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a physical property is a characteristic of a pure subtance that can be observed without changing it into another substance.
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Chemical property
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A chemical property is a characteristic of a pure substance that describes its abilty to change into different substances.
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Element
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An element is a pure substance that cannot be broken down into any other substance ny chemical or physical means.
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Simple Substances
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Elements are simple substances.
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Atom
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an atom is the basic particle from which all elements are made.
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Chemical bond
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a Chemical bond occurs when atoms combine because there is a force of attraction between the two atoms.
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Molecules
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Atoms combine into molecules-which are groups of two or more atoms held together by chemical bonds.
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Compound
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A pure substance made of two or more elements chemically combined in a set ratio.
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Chemical formula
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represents a compound by showing the elemnts in the coumpiund and the ratio of the atoms.
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Chemically combined compounds
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When elemnts are chemically combined, the form coumpounds having properties that are different from those of the uncombined elements.
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Mixture
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Made of two or more substances-elements, compounds, or both-that are together in the same place but are not chemically combined.
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