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Unit 4 Vocabulary
Unit 4 Definitions
Term | Definition |
---|---|
Atomic Mass | Average mass of one atom of an element. |
Periodic table | A table where periods are arrangend. |
Chemical Symbol | 1 or 2 letter code that stands for elements. |
Period | Row of elements in the periodic table. |
Group | Column of elements in the periodic table. |
Matter | The stuff that everything is made of. |
Element | The building blocks of matter. |
Compound | Matter made up of 2 or more elements. |
Atom | Smallest particle an element can go. |
Electron | Negatively charged particle outside an atom. |
Nucleus | Structure near the center of the cell. |
Proton | Compound or element that is the result of chemical eaction. |
Neutron | Paticle with neutral charge. |
Energy level | Amount of energy in a electron. |
Isotope | Atoms with same number of neutrons in the nucleus. |
Mass number | Sum of protons and neutrons in the nucleus. |
Atomic number | Number of protons and neutrons in the nucleus. |
Metal | Elements solid with a shiny surface. |