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Chemistry Vocab
| Term | |
|---|---|
| Atom | the smallest particle of an element that retains its identity in a chemical reaction |
| atomic number | the number of protons in an atom |
| average atomic mass | the weighted average of the atomic masses of the naturally occurring isotopes of an element |
| Chemical Formula | shows the elements in the compound and the ratio of atoms |
| Coefficient (in chemical equation) | Number that appears before the formula representing how many of each molecule or compound |
| Combustion Reaction | a reaction in which a substance reacts rapidly with oxygen, often producing heat and light |
| Covalent Bond (Compound) | a chemical bond in which two or more nonmetal atoms share electrons between them. |
| Decomposition reaction | A reaction in which a single compound breaks down to form two or more simpler substances |
| Double-Replacement (Displacement) reaction | a chem reaction where 2 compounds exchange ions and form two new compounds. |
| Electron | A subatomic particle that has a negative charge and found outside the nucleus |
| Group (periodic table) | a vertical (Up and down) column of elements in the periodic table |
| Ionic Bond (Compound) | A metal/nonmetal bond resulting from the attraction between oppositely charged ions. |
| metallic bond (compound) | a bond formed between two or more metal nuclei and the electrons around them |
| Neutron | A subatomic particle that has no charge, found in the nucleus of an atom |
| Period (periodic table) | A horizontal (side to side) row of elements in the periodic table |
| Polyatomic ion | A covalently bonded group of atoms that has a positive or negative charge and acts as a unit |
| Products (in chemical equation) | a substance formed as a result of a chemical reaction |
| Proton | A subatomic particle that has a positive charge, found in the nucleus of an atom |
| Reactants (in chemical equation) | a substance that takes part in and undergoes change during a reaction. |
| Single-Replacement (Displacement) reaction | a chemical change in which one element replaces a second element in a compound |
| Subscript (in Chemical Equation) | Small dropped number in a formula that tells how many of the element before are present. |
| Synthesis Reaction | a reaction in which two or more substances combine to form a new compound |
| Valence electron | an atomic particle that is available to be lost, gained, or shared in the formation of chemical compounds |
Created by:
Baldwin Ramsey
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