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Science 1-1.
Question | Answer |
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matter | anything that has mass and takes up space |
chemistry | the study of properties of matter and how matter changes |
substance | a single kind of matter that is pure, meaning it always has specific makeup or composition and a specific set of properties |
physical property | a characteristic of pure substance that can be observed without changing it into another substance |
chemical property | a characteristic of a pure substance that describes its ability to change into different substances |
element | a pure substance that cannot be broken down into any other substance by chemical or physical means |
atom | the basic particle with all elements are made |
chemical bond | which a force of attraction between two atoms |
molecule | groups of two or more atoms held together by chemical bonds |
compound | a pure substance made of two or more elements chemically combined in a set ratio |
chemical formula | shows the elements in the compound and the ratio of atoms |
mixture | made up of two or more substances elements, and compounds, both that are together in the same place but not chemically combined |
heterogeneous mixture | mixtures in which pure substances are unevenly distributed throughout the mixture |
homogeneous mixture | mixtures in which substances are unevenly distributed throughout the mixture |
solution | an example of homogeneous mixture; forms when substances dissolve |