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16 Cards in this Set
- Front
- Back
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physical change |
a change that does not result in a new substance being formed |
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chemical change |
a change that transforms one substance into a different substance |
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periodic table |
a chart that organizes the elements by their chemical properties and increasing atomic number |
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period |
a row of the periodic table |
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group |
a column of the periodic table |
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metals |
elements that are typically shiny and good conductors of heat and electricity |
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nonmetals |
elements that are poor conductors of heat |
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atomic mass unit |
a unit of mass equal to1.66x10-24 grams |
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alkali metals |
elements in the first group of the periodic table |
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halogens |
elements in the group containing fluorine, chlorine, and bromine, among others |
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noble gases |
elements in the group containing helium, neon, and argon, among others |
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periodicity |
the repeating pattern of chemical and physical properties of the elements |
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electrical conductor |
a material that allows electricity to flow through easily |
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thermal conductor |
a material that allows heat to flow through easily |
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insulator |
a material that slows down or stops the flow of either heat or electricity |
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steel |
an alloy of iron and carbon |
