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Chapter 7 - Part 2
Introduction to Matter - Gr. 6 + Measurement
Term | Definition |
---|---|
weight | A measure of the force of gravity acting on an object. |
mass | A measure of how much matter is in an object. |
International System of Units | A system of units used by scientists to measure the properties of matter. |
volume | The amount of space that matter occupies. |
density | The measurement of how much mass of a substance is contained in a given volume. |
metric system | A system of measurement based on the number 10. |
physical change | A change that alters the form or appearance of material but does not make the material into another substance. |
chemical change | A change in which one or more substances combine or break apart to form new substances. |
law of conservation of mass | The principle that the total amount of matter is neither created nor destroyed during any chemical of physical change. |
temperature | How hot or cold something is |
thermal energy | The total kinetic and potential energy of all the particles of an object. |
endothermic change | A change in which energy is absorbed. |
exothermic change | A change in which energy is released. |
chemical energy | A form of potential energy that is stored in chemical bonds between atoms. |