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Chemistry
Chemistry Vocab Words
| Term | Definition |
|---|---|
| Element | -made of one kind of atom. It can't be broken down during a chemical reaction. It combines with other elements to form compounds. |
| Symbol | -the abbreviation for the element. Always a capital letter, or a capital and a lower case. |
| Atomic mass | -decimal number below the symbol. It is the mass of the protons and neutrons in an element. |
| Atomic number | -located above the symbol. Tells the number of protons in the nucleus of an atom. |
| Group | -vertical column of elements on the periodic tables. These element have similar properties. |
| Period | -elements in a horizontal line on the periodic table. These elements all have the same number of electron levels (valence). |
| Mass number | -number of protons and neutrons in the nucleus of an atom. It is the atomic mass rounded to the nearest whole number. |
| Protons | -positively charged particles located in the atom. |
| Electrons | -negatively charged particles located in the atom. |
| Neutrons | -neutral charged particles located in the atom. |
| Atomos | -Greek word meaning "being able to divide. |
| Metals | -usually shiny and can be formed into shapes (malleable). They are good conductors of electricity. |
| Nonmetals | -most have the properties opposite of metals. Nonmetals are dull and cannot be . |
| Semimetals | -have some properties of both metals and nonmetals.Some semimetals are shiny but cannot be shaped. |
| Noble Gases | -elements that do not combine easily with other elements. |
Created by:
mckees.20
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