| A | B |
|---|
| matter | anyhing that has mass and takes up space |
| chemistry | the study of the properties of matter and how matter changes |
| element | a substance that cannot be broken down into any other substances by chemical or physical means |
| compound | a substance made of two or more elements chemically combined in a specific ratio, or proportion |
| mixture | consists of two or more pure substances -- elements, compounds or both, -- that are in the same place but not chemically combined |
| solution | a well-mixed evenly mixed mixture |
| physical change | a change that alters the form or appearance of a material but does not convert the material into new substances |
| chemical change | a change in matter that forms one or more new substances |
| precipitate | a solid that forms from solution during a chemical reaction |
| atom | smallest part of an element |
| molecule | particle made of two or more atoms bonded together |
| chemical bond | force that holds atoms together |
