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Sci Vocab p E34
Atoms & Elements Vocab
Term | Definition |
---|---|
nucleus | the center of an atom |
proton | a subatomic particle with a positive charge |
neutron | a subatomic particle with no charge |
electron | a subatomic particle with a negative charge |
element | a substance made up of only one kind of atom |
atom | the smallest unit of an element that has all the properties of that element |
molecule | a grouping of two or more atoms joined together |
periodic table | the table of elements in order of increasing atomic number, grouped by similar properties |
compound | a substance made of the atoms of two or more different elements |