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23 Cards in this Set
- Front
- Back
- 3rd side (hint)
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How many molecules are in a mole? |
6.02 × 10^23 |
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Equation for a mole |
n=mass÷Mr |
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Equation for amount of particles |
Number of particles= n × avogadro's constant, 6.02×10^23 |
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both equations for moles |
Volume × concentration= mass/Mr=n |
Amounts in solution |
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What are the principle energy levels sub levels and how many electrons can they hold |
S, P, D, F , G/ 2,6,10,14,18 |
Up to 5 |
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How do electrons fill sub levels first 5 |
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What can you use in replacement of the intial sub levels instead of writing them out |
The last noble gas in the periodic table before the element |
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How to calculate a new concentration |
(Initial concentration x initial volume)÷final volume |
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What are the quantam numbers |
n, principal/L Angular/ ml magnetic/ ms spin |
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How would you record the ionsation energy for an element |
DeltaH=Delta,i (for reaction) 1 (for energy level) |
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How does ionization energy change on the periodic table |
From bottom left to top right |
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How does electron affinity change on periodic table |
Bottom left, to top right |
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How does electronegativity change on a periodic table |
Increases from bottom left to top right |
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How does the atomic radius change on the periodic table |
Smallest on the top right to largest on the bottom left |
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What is enthalpy |
Energy exchange at a constant pressure |
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On which reaction is delta H positive and which on is delta H negative |
Endothermic delta H positive, exothermic delta H negative |
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Equations for enthalpy |
Sum of delta H bonds broken- sum of delta H bonds formed |
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Name the enthalpy definitions and how you calculate them |
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What does an energy cycle help you find |
Enthalpy in a reaction |
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What is the general equation for heat change/ delta H |
Delta H = -q/n |
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What is entropy |
A measure of the number of ways that particles can be arrange and the energy distibuted between them |
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What is entropy at absolute freezing point |
0 |
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Formula for entropy change |
Delta entropy= sum of products entropy- sum of reactants entropy |
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