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Unit 1: 12C Chem
everything from Unit 1
| Term | Definition |
|---|---|
| Matter | Has volume and mass |
| Period | side to side in periodic table |
| Group | Up and down in periodic table |
| ion | Can contain one or more atoms. Different number of protons and electrons |
| valence electrons | last ring on the B-R diagrams |
| stable octet | sharing electrons |
| Bohr-Rutherford diagram | shows the amount of rings and electrons of an element |
| Lewis Diagram | shows number of valence electrons around the element symbol |
| atomic mass | average mass |
| mass number | exact mass |
| isotope | same element different mass |
| qualitative analysis | answer the why question/ observe something |
| spectroscopy | study of the interaction between light and matter |
| flame emission spectroscopy | use a flame to determine what colour an element is |
| excited state | if an atom absorbs heat or light it can jump to a different energy level |
| ground state | at its lowest energy level |
| spectroscope | measures the spectrum of light |
| visible spectrum | colours visible to the human eye ROYGBIV |
| continuous spectrum | contains all wavelengths of light in a certain range |
| line spectrum | contains only specific wave lengths of light |
| element/compound | element is one kind of atom where compound is more than one atom |
| ionic compound | contains a metal and nonmetal |
| covalent compound | 2 non-metals (H2O) |
| crystal lattice | 3D arrangement - Crystals |
| molecule | made up of groups of atoms |
| ionic bond | one atom donates electrons to the other |
| covalent bond | 2 atoms share electrons |
| multivalent | more than one charge on an element |
| polyatomic ion | covalently atoms that act like a single ion |
| prefix | name given to the name of a given element |
| chemical reaction | chemicals reacted with each other |
| evidence of chemical change | creates different properties (eg. burning wood, cooking an egg, etc.) |
| word/skeleton equation | creating a question in words vs in symbols/numbers |
| reactant | what you are using to make a product |
| product | final solution of reactants going together |
| aqueous | liquid chemicals |
| synthesis | 2 or more substances react to make a new substance |
| decomposition | turning a product back to the reactants |
| single/double displacement | Element for an element. Double displacement is when two ionic species are exchanged with two molecules |
| solute | can dissolve in a solvent (ex. salt) |
| solvent | Liquid solution |
| solubility | how much a solute dissolves in a solvent |
| precipitate | a solid forming form a solution |
| spectator ion | the ions that do not participate in the chemical reactions |
| net ionic equation | the ions that participate in the chemical reactions |
Created by:
adrianna_b
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