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Science Vocab
Physical Science Book, Ch. 2, Section 1
Term | Definition |
---|---|
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 the same makeup or composition, and a specific set of properties |
physical property | a characteristic of a 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 substances by chemical or physical means |
atom | the basic particle from which all elements are made |
chemical bond | 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 of two or more substances; elements, compounds, or both; that are together in the same place but not chemically combined |
heterogeneous mixture | a mixture where you can see the different parts in it |
homogeneous mixture | a mixture so evenly mixed, you can't see the different parts |
solution | an example of a homogeneous mixture (the most universal/basic solution is water) |