Science
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33 terms
Terms | Definitions |
|---|---|
 chemistry | study of matter and its reactions |
| matter | anything that has mass and takes up space |
| properties | characteristics used to describe a substance |
| gas | phase of matter that has no definite shape or volume |
| liquid | phase of matter with a definite volume, but no definite shape |
| phase | form of matter |
| solid | phase of matter with a definite shape and volume |
| condensation | change from a gas to a liquid |
| evaporation | change from a liquid to a fas at the surface of the liquid |
| freezing | change from a liquid to a solid |
| melting | change from a solid to a liquid |
| chemical change | change that produces new substances |
| physical change | change that does not produce new substances |
| elements | simple substances that cannot be broken down into simpler substances |
| chemical symbols | shorthand way of writing the names of the elements |
| group | vertical column of elements in the periodic table |
| period | horizontal row of elements in the periodic table |
| periodic | repeating pattern |
| ductile | able to be drawn into thin wires |
| luster | shine |
| malleable | able to be hammered into different shapes |
| metals | elements that have the properties of luster, ductility, and malleability |
| nonmetals | elements that have none of the properties of metals |
| inert gases | six elements that make up the last group in the periodic table of the elements |
| inert gases | noble gases |
| inert means | inactive |
| the zigzag line in the periodic elements chart separates what? | metals and nonmetals |
| metals are shiny, ductile, malleable and good conductors of what? | electricity and heat |
| what Russian chemist organized the elements chart in order of increasing mass? | Dmitri Mendeleev |
| all chemical symbols consist of one or two letters... | the first letter or single letter is always capitalized and the second is always lower case |
| chemical symbols are taken from what? | the names of the elements |
| What famous Polish chemist is the only person to ever receive TWO Nobel Prizes in science | Marie Curie |
| The four properties of matter are? | mass, volume, weight and density |
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