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Atoms
Chemistry
Term | Definition |
---|---|
Atom | The smallest particle that can still be considered an element. |
Electrons | A negatively charged particle that spins around the nucleus. |
Nucleus | The central core of an atom which conatains protons and neutrons. |
Protons | Small positively charged particles that are found in the nucleus of an atom. |
Energy level | A reigion of an atom in whic electrons of the same energy are likely to be found. |
Neutron | A small particle in the nucleus of an atom with no electrical charge. |
Atomic Number | The number of protons in the nucleus of an atom. |
Isotopes | An atom with the same number of protons and a diffrent number of neutrons form other atoms of the same element. |
Mass Number | The sum of protons and neutrons in the nucleus of an atom. |
Atomic Mass | The average mass of all the isotopes of an element. |
Periodic table | An arrangement of the elements showing the repeating pattern of their properties. |
Chemical Symbol | A charactoristic of a substance that describes its ability to change into diffrent substances. |
Period | A horizontal row of elements in the periodic table. |
Group | Elements in same verticaal column of the periodical table. |