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unit 1-section 2
vocab words
Question | Answer |
---|---|
Matter | the substance things are made of, something that takes up space and has weight |
Solid | something that has length, width, and thickness that also keeps its shape and size |
Liquid | a free flowing substance that's neither a solid or gaseous |
Gas | a substance having no fixed shape and tending to expand without limit |
Pure substance | a sample of matter, either an element or compound, that consists of only one component wuth definite physical and chemical properties and a definite composition |
Homogeneous | of uniform structure or composition |
Heterogeneous | consisting of dissimilar or diverse ingredients or constituents |
Solution | the act or process by which a solid, liquid, or gas is dissolved in a liquid |
Element | any of more than 100 fundamental substance that consists of atoms of only one kind and that singly or in combination constitute all matter |
Compound | something that is formed by combining two or more parts or elements |
Fixed composition | the qualitative and quantitative makeup of a chemical compound that doesn't change |
Phase diagram | a graph showing the limiting conditions for solid, liquid, and gaseous phases of a substance or of a mixture of substances while undergoing changes in pressure and temperature |
Kinetic theory | all matter is made of atoms that are in constant motion |
Temperature | degree of hotness or coldness as shown by a thermometer |
Pressure | the action of pressing or bearing down upon |