| A | B |
|---|
| Matter | anything that has mass, takes up space and exhibits inertia |
| Mass | the actual amount of matter present |
| Weight | a measure of the force of gravity pulling on an object |
| 4 States of Matter | solid, liquid, gas, and plasma |
| Solid | matter that has a definite shape, a definite volume and cannot be compressed |
| Liquid | matter that has a definite volume but no definite shape and cannot be compressed |
| Gas | matter that has NO definite shape or volume but that can be compressed |
| Plasma | gas that has been heated to extremely high temperatures |
| Physical properties | Properties that describe the appearance and composition of the matter. They can be observed. |
| Luster | shiny |
| Malleable | can be pounded into sheets and bent into new shapes |
| Ductile | can be pulled out into a wire |
| Density | the ratio of the mass of an object to its volume (never changes) |
| Specific Heat Capacity | the amount of heat that a substance can absorb without changing it's temperature |
| Chemical Properties | properties of matter that describe how a chemical reacts with other things (cannot see them) |
| Physical Change | Change in matter that does NOT make anything new; it does not change the identity of the substance |
| Melting | change of state going from a solid to a liquid |
| Freezing | change of state going from a liquid to a solid |
| Evaporation | change of state going from a liquid to a gas |
| Condensation | change of state going from a gas back to a liquid |
| Sublimation | change of state going from a solid directly to a gas without first becoming a liquid |
| Chemical Change | change in matter where something new is made |
| Exothermic reaction | Reaction that gives off heat and gets hot |
| Endothermic reaction | Reaction that absorbs heat from the environment and gets cold |
| Precipitate | a solid that forms when two liquids chemically react |
| Evidence That A Chemical Change Has Occurred | change in color, change is temperature, light is given off, it bubbles or fizzes, a precipitate is formed, change in odor |
