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Atoms
Chemistry
Term | Definition |
---|---|
Atom | The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element |
Electrons | A tiny, negatively charged particle that moves around the outside of the nucleus of an atom |
Nucleus | In cells, a large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cells activity. 2. The central core of an atom which contains protons and neutrons. |
Protons | Small, positively charged particles that are found in the nucleus of an atom |
Energy Level | A region of an atom in which electrons of the same energy are likely to be found |
Neutron | A small particle in the nucleus of the atom, with no electrical charge |
Atomic Number | The number of protons in the nucleus of an atom |
Isotopes | An atom wit the same number of protons and a different number of neutrons from other atoms of the same element |
Mass Number | The sum of protons and neutrons in the nucleus of an atom |
Atomic Mass | The average |
Periodic Table | |
Chemical Symbol | |
Periods | |
Group |