Term
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Definition
| Anything that has mass and takes up space |
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Term
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Definition
-has a definite shape
-molecules are tight together
-molecules move fast in a fixed pattern |
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Term
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Definition
-has no definite shape
-molecules are farther apart and not in any particular order
-molecules move and slide over each other |
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Term
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Definition
–has no definite shape
-molecules are far apart
-molecules move about freely |
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Term
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Definition
| Measure of the amount of matter in an object |
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Term
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Definition
| Substance that cannot be chemically broken down into simpler substances |
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Term
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Definition
| Smallest part of an element that can be identified as that element |
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Term
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Definition
| Center, or core, of an atom |
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Term
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Definition
| Particle that has a positive charge |
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Term
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Definition
| Particle that has no charge |
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Term
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Definition
| Particle that has a negative charge |
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Term
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Definition
| Explains electrons and their relationship to their different energy levels, and how they move around the nucleus |
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Term
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Definition
| Number of protons in the nucleus of an atom |
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Term
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Definition
| Total mass of the protons and neutrons in an atom, measured in atomic mas units |
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Term
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Definition
| Number of protons and neutrons in the nucleus of an atom |
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Term
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Definition
| Place in an electron cloud where an electron is most likely to be found |
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Term
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Definition
| Shortened way of writing the name of an element |
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Term
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Definition
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Term
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Definition
| Vertical column of elements in the periodic table |
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Term
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Definition
| Horizontal row of elements in the periodic table |
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Term
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Definition
| Organized the first useful periodic table |
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Term
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Definition
| Organizes the elements into categories |
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Term
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Definition
-electrons in the highest energy level
-outside energy level
-held most loosely |
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Term
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Definition
| Total mass of the protons and neutrons in an atom, measured in atomic mass units |
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