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Definition
| anything that occupies space and has mass. |
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| the quantity of matter an object has. |
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| substances that cannot be broken down chemically into simpler kinds of matter. |
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| the simplest particle of an element that retains all of the properties of that element. |
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| the central region made up on protons and neutrons. |
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Definition
| a subatomic particle that has a positive charge and that is located in the nucleus of an atom. |
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Definition
| a subatomic particle that has no charge and is located in the nucleus of an atom. |
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| the number of protons in an atom. It appears directly above the chemical symbol in the periodic table. |
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Definition
| equal to the total number of protons and neutrons of the atom. |
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Definition
| a subatomic particle that has a negative charge. |
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| a three-dimensional region around a nucleus that indicates the probable location of an electron. |
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| atoms of the same element that have different number of neutrons. |
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Definition
| a substance made up of atoms of two or more different elements joined by chemical bonds. |
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Definition
| the attractive forces that hold atoms together. |
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| formed when atoms share one or more pairs of electrons. |
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Definition
| the simplest part of a substance that retains all of the properties of that substance and can exist in a free state. |
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Definition
| an atom or molecule with an electrical charge. |
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Definition
| the attractive force between oppositely charged ions, which form when electrons are transferred from one atom to another. |
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