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10 Cards in this Set
- Front
- Back
Solids |
A substance having a definite shape and volume; one that is neither liquid nor gaseous. |
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Liquids |
The state of matter in which a substance exhibits a characteristic readiness to flow, little or no tendency to disperse, and relatively high incompressibility. |
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Atom |
All elements are made of atoms. An atom consists of a nucleus containing protons and neutrons, surrounded by electrons. |
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Atomic number |
The number of protons in the nucleus of an atom. Also called the proton number. |
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electron |
Sub-atomic particle, with a negative charge and a negligible mass relative to protons and neutrons. |
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electron arrangement
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The order electrons are arranged into between different energy levels. |
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mass number
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The number of protons and neutrons found inside the nucleus of an atom. |
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neutron |
Uncharged sub-atomic particle, with a mass of 1 relative to a proton. |
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nucleus |
The central part of an atom. It contains protons and neutrons, and has most of the mass of the atom. The plural of nucleus is nuclei. |
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proton |
Sub-atomic particle with a positive charge and a relative mass of 1. |