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Matter
| Question | Answer |
|---|---|
| substance | type of matter with a fixed composition that CANNOT be separated by physical means |
| element | substance made of atoms with the same identify(water) |
| compound | atoms of two or more elements contained(gold) |
| mixture | material made up of two or more substances that CAN be separated by physical means |
| heterogenous | mixture in which different materials can be easily distinguished(salt water) |
| homogeneous | mixture in which two more substances are uniformly spread(vinegar, salt water) |
| solution | homogenous mixture of particles so small that they cannot even be seen with a microscope and will never settle to the bottom of the container(vinegar, soda) |
| colloid | type of mixture with the particles that are larger than those in a solution(fog, milk, cool whip) |
| suspension | heterogeneous mixture containing a liquid in which visible particles settle(Italian dressing, muddy pond water) |
| matter | anything that has a mass and takes up space |
| kinetic theory | explains how particles in matter behave .....all mater is composed of particles ....particles are in constant, random motion. .....particles collide with each other and walls of their container |
| solid | definite shape and volume |
| liquid | indefinite shape and definite volume |
| gas | indefinite shape and volume |
| plasma | high temperature gas |
| temperature | related to the average kinetic energy of an object atoms or molecules |
| thermal expansion | increase in the size of a substance when the temperature increases and contracts when cooled ......expectation to rule-when cooled it expands(ice) |
| physical property | characteristics of a material that you can observe without changing the substance(color, size) |
| chemical property | characteristics of a substance that indicates weather it can undergo a certain chemical change(flammable) |
| physical change | a change in size, shape or state of matter; substance DOES NOT change identify when it undergoes phys change |
| chemical change | a change in one substance to another substance |
| law of conservation of mass | the mass of ALL substances present before a chemical change equals mass of ALL substances after the change |
Created by:
ejames03
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