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MODULE 2
Module 2 States of Matter Test Review
| Question | Answer |
|---|---|
| Atom | the basic unit of an element |
| Atomic Theory | states that all matter is made of atoms that cannot be divided or destroyed |
| Element | a substance that cannot be broken down into a simpler substance |
| Gas | the state of matter that does not have a definite shape or a definite volume |
| Liquid | the state of matter that has an indefinite shape but a definite volume |
| Magnetic field | a region around a magnetic material or moving electric charge |
| Particle | a tiny piece of matter. |
| Phase | a unique form of the existence of matter |
| Plasma | an ionized gas of positively and negatively charged particles |
| Scientific theory | an explanation for some naturally occurring event, developed from extensive observations, experimentation, and reasoning |
| Solid | the state of matter that has a definite shape and volume |
| Boiling point | the temperature at which a liquid turns to gas |
| Electrical conductivity | the degree to which a material can transmit electricity |
| Extensive property | a physical property that depends on the sample size |
| Intensive property | a physical property that is not dependent on sample size |
| Magnetism | the attractive and repulsive magnetic forces between objects |
| Melting point | the temperature at which a solid turns to liquid |
| Physical property | an observable and measurable physical characteristic of matter |
| Porosity | the amount of space in a material through which liquid or air can pass |
| Saturation | the state when no more of something can be added or combined |
| Specific Heat capacity | the amount of heat one gram of a substance needs to absorb to raise its temperature by one degree Celsius |
| Solubility | a material's ability to be dissolved in a solvent |
| Solute | the component dissolved in a solution |
| Solvent | the component that dissolves other substances in a solution |
| Thermal conductivity | the degree to which a material can transmit heat |
| Conclusion | a judgment reached by inference and reasoning |
| Controlled variable | factors that remain the same throughout the experiment |
| Dependent variable | a variable whose value depends on another variable |
| Experiment | a scientific process to test a hypothesis |
| Independent variable | a variable that does not change due to another variable |
| Chemical change | a change that occurs when one substance combines with another substance to make a new substance |
| Chemical property | a characteristic of a substance that describes its composition, reactivity, and how the substance changes into a different substance |
| Compressibility | the measure of how much the volume of matter can decrease under pressure |
| Condensation | the phase transition of a substance from a gas to a liquid |
| Evaporation | the phase transition of a substance from a liquid to a gas |
| Flammability | how easily a substance can be set on fire |
| Freezing | the phase transition of a substance from a liquid to a solid when its temperature is lowered below its freezing point |
| Heat of Combustion | measure of how much heat is given off when a substance is burned |
| Malleability | the ability of a solid to bend or be hammered into a new shape |
| Melting | the phase transition of a substance from a solid to a liquid when heat is added |
| Molecular composition | the number of atoms of each element that make up the molecules of a substance |
| Molecule | the smallest unit of matter of a substance that retains all the physical and chemical properties of that substance; consists of a single atom or a group of atoms bonded together |
| Physical change | a change to any physical property of a substance |
| Reactivity | the readiness of a substance to undergo a chemical change |
| Sublimation | the phase transition of a substance directly from the solid to the gas phase without passing through the liquid phase |
| Toxicity | the ability of a substance to damage or harm an organism |
Created by:
shguidry
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