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science - substances
| Question | Answer |
|---|---|
| pure substance | a pure substance is a substance that has a fixed composition |
| mechanical mixture | a mixture of two or more substances that are physically combined and can be taken apart |
| solution | a solution is a homogenous mixture of two or more substances that are dissolved |
| solute | a solute is the one being dissolved and is the smallest substance in the solution |
| solvent | the one doing the dissolving and the larger substance |
| particle theory 1 | atoms of the same element are the same |
| particle theory 2 | particles are attracted to each other by forces |
| particle theory 3 | particles have space in between them |
| particle theory 4 | particles are always moving above -273.15 |
| particle theory 5 | the faster particles move the warmer they get |
| solid | particles are closely packed together and have a fixed shape and volume |
| liquid | particles are closely packed but can move past each other but still have a fixed volume |
| gas | particles are far away from each other and can change to fill the whole container |
| evaporation | liquid to gas |
| condensation | gas to liquid |
| sublimation | solid to gas |
| deposition | gas to solid |
| melting | solid to liquid |
| freezing | liquid to solid |
| ionzation | gas to plasma |
| recombinition | plasma to gas |
| energy | energy is the ability to do work and is involved in the changes of states and its obtained by calories. |
| thermal energy | thermal energy is the internal energy of activity |
| kinetic energy | kinetic energy is the energy of motion of particles |
| thermal expansion | the expansion of a substance when heated |
| thermal contraction | the contraction of an object when cooled |
| the law of conservation of matter and mass | this law states that matter cannot be destroyed or made in any chemical reaction - only rearranged |
| reading a graduated cylinder volume | read the bottom of the meniscus the curved surface of the liquid in the cylinder |
| distillation | distillation is a process that seperates components of a liquid mixture based on the differences in boiling points |
| thermodynamics | thermodynamics is the science of the relationships between heat work and temprature and energy it deals with the transfer of one to another and one form to another |
| plasma | known as the fourth state of matter that holds 99 percent of known matter |
Created by:
gurmand1576
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