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'21 Chem Final pg 2
| Question | Answer |
|---|---|
| Cation groups | Groups 1A, 2A, 3A |
| Anion groups | Groups 5A, 6A, 7A |
| ion with positive charge | cation |
| ion with negative charge | anion |
| change in number of neutrons | isotope |
| change in number of electrons | ion |
| change in number of protons | different element |
| starting material in chemical reaction (left side) | reactant |
| get made in chemical reaction (right side) | products |
| speed up chemical reaction (placed above arrow) | catalyst |
| numbers placed in front to balance equation | coefficient |
| small numbers to the right that are NEVER changed to balance equation | subscript |
| states that mass is not created or destroyed | law of conservation of mass |
| equation that is not balanced | skeleton equation |
| 6.02 x 10^23 representative particles | Avogadro's number |
| is 0 to 6 on pH scale ; releases H+ ions | Acids |
| is 8 to 14 on pH scale ; releases OH- ions | Bases |
| is 7 on pH scale | Neutral substances |
| SI unit for amount of substance | mole |
| no prefixes | Naming of ionic compounds |
| use prefixes | Naming of covalent compounds |
| happens to valence electrons in ionic compounds | Transfer electrons |
| happens to valence electrons in covalent compounds | Share electrons |
| means 2 atoms | diatomic |
| means 1 atom | monatomic |
| means 4 atoms | tetratomic |
| means 8 atoms | octatomic |
| formula written using the lowest whole number ratio | empirical formula |
| is conserved in chemical reactions | total mass, type and number of atoms |
| A + B --> AB | synthesis reaction |
| AB --> A + B | decomposition reaction |
| AB + C --> CB + A | single replacement reaction |
| AB + CD --> AD + CB | double replacement reaction |
| CxHy + O2 --> CO2 + H2O | combustion reaction |
| horizontal rows on periodic table (7) | period |
| vertical columns on the periodic table (18) | group / family |
| element that has properties of both metals and non-metals | metalloid |
| indicates the number of only valence electrons | group number |
| indirectly tells the number of ALL electrons | atomic number |
| where protons and neutrons are found in atom | nucleus |
| where electrons are found in atom | electron cloud |
| 2 properties of bases | slippery and bitter |
| 2 properties of acids | corrosive and sour |
| bases do this to pH paper | turns red pH litmus paper blue |
| acids do this to pH paper | turns blue pH litmus paper red |
Created by:
cadetjt
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