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John Ross Comes
Chapter 10 vocab
| Question | Answer |
|---|---|
| Element | A pure substance that cannot be broken down into simpler substances by physical or chemical. |
| Atom | The smallest particles of an element that retains the chemical identity of the element. |
| Compound | A substance that contains two or more different elements chemically joined and has the same composition throughout. |
| Molecule | A group of two or more atoms jointed by chemical bonds. |
| Pure substance | Matter that cannot be separated into other types of matter by physical means. |
| Mixture | Matter that contains a combination of different elements and/ or compound and can be separated by physical means. |
| Homogeneous mixture | A mixture that is the same throughout. |
| Heterogeneous mixture | A mixture in which different samples are not made up of the same proportions of matter. |
| Fahrenheit | A temperature scale in which water freezes at 32 and boils at 212. |
| Celsius | A temperature scale in which water freezes at 0 and boils at 100. |
| Thermal Energy | Energy due to temperature. |
| Temperature | A quantity that measures the kinetic energy per molecule due to random motion. |
| Thermometer | Instrument that measures temperature. |
| Absolute zero | Lowest possible temperature at which thermal energy is a close to zero as it can be (-273 C). |
| Kelvin scale | Temperature scale that starts at absolute zero and has units the same as the Celsius scale. |
| Solid | Phase of matter that holds its shape and does not flow. |
| Liquid | Phase of matter that holds its volume, does not hold its shape and flows. |
| Gas | Phases of matter that flows, does not hold it volume and can expand or contract to fill a container. |
| Plasma | Phase of matter in which the mater is heated to such a high temperature that some of the atoms begin to break apart. |
| Intermolecular forces | Forces between atoms or molecules in a substance that determines the phase of matter. |
| Melting point | Temperature at which a substance changes from a solid to a liquid (melting) or liquid to solid (freezing). |
| Boiling Point | Temperature at which a substance changes from a liquid to a gas (boiling) or from a gas to a liquid (condensation). |
Created by:
Bud Bud
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