| Term | Definition |
|---|
| matter | a substance or material; everything is made of this |
| volume | the amount of space a substance or object occupies |
| displaced | to remove; to take over the place or position of something |
| mass | the quantity of matter a body of material contains |
| atom | an extremely small amount of matter |
| density | how tightly packed together the matter is within a substance |
| surface tension | the attraction of molecules to each other on a liquid's surface; a barrier is created between the air and the liquid |
| mixture | a substance made by combining two or more different materials in such a way that no chemical reaction occurs |
| solution | a mixture of one substance dissolved in another so the properties are the same throughout |
| cohesion | the sticking together of particles of the same substance |
| solute | a substance that is dissolved in another substance |
| solvent | a substance, usually a liquid, that dissolves another substance |
| suspension | a mixture in which fine particles are suspended in a fluid where they are supported by buoyancy |
| emulsion | a suspension of small particles of one liquid in a second liquid with which the first will not mix |
| emulsifier | a food additive used to keep oils spread throughout in a suspension; mayonnaise and peanut butter |
| physical change | a change that affects the size, shape or color of a substance but does not affect its composition; new substance is not formed |
| viscosity | "thickness" of a liquid or its ability to flow; usually the warmer the liquid get the more it will flow |
| viscous | having a thick, sticky consistency between a solid and a liquid; having a high viscosity |
| chemical change | changes substances undergo when they become new or different substances |
| oxide | a chemical combination of oxygen atom(s) with a metallic or non metallic matter (element) |
| rusting | occurs when oxygen comes in long-term contact with certain metals |
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