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Science Unit4
Question | Answer |
---|---|
Matter | has mass and takes up space |
physical property | characteristics that can be observed without altering the substance |
chemical property | characteristic that can be observed with altering the substance |
element | simple substances that cannot be broken down into simpler substances |
atom | basic unit of matter |
chemical bond | A force of attraction between 2 atoms |
heterogeneous | you can see the different parts of this mixture |
homogeneous | you cant see the different parts of this mixture |
physical change | a change from one state to another without a change in chemical composition |