| Term | Definition |
|---|
| accuracy | the closeness of a measurement to the true or accepted value of the quantity measured |
| law of conservation of mass | matter cannot be either created or destroyed in ordinary chemical or physical changes |
| energy | the ability to cause change or the ability to do work |
| physical property | can be observed or measured without altering the identity of a material |
| extensive physical | depend on the amount of matter present - mass, length & volume |
| intensive physical | do not depend on amount of matter present - melting point, density, color, malleability |
| physical change | any change in which a property of matter that does not result in a change in identity |
| change of state | physical changes |
| chemical property | the ability of a substance to undergo a change that alters its identity |
| chemical reaction | any change in which one or more substances are converted into different substances with different characteristic properties |
| reactant | undergo chemical change |
| product | new substance produced |
| mixture | combination of two or more kinds of matter each of which has its own composition and properties |
| heterogeneous mixture | not uniform throughout |
| homogeneous mixture | uniform throughout (solution) |
| phase | portions of matter that have both the same chemical properties and the same physical properties |
| element | substance that cannot be separated into other substance by and ordinary chemical change |
| quantitative | numerical information |
| qualitative | nonnumerical information |
| scientific notation | numbers written in the form Mx10^n |
| precision | the agreement among the numerical values of a set of measurements of the same quantity made in the same way |
Combine with other sets
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