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Chapters3&4
Chapters 3&4
Question | Answer |
---|---|
Reactants | Starting Materials, always found on the left side. |
Products - | what is created in a rxn. always on the right side. |
states of matter - | solid, liquid, gas, aquious. |
Catalyst - | allows reaction to occur, or speeds up a rxn. |
inhibitor | something that stops or slows down a reaction. |
RxN Types | Combination, Decomposition, Combustion, Metathesis, Double replacement. |
Combination - | adding atoms or compounds together to from 1 new big compound. A + B => AB |
Decomposition - | one molecule breaking down into smaller pieces, may be atoms or compounds. AB => A + B |
Combustion - | rxn of something with oxygen. A + O2 => AO2 |
Metathesis - | Single replacement in a reaction. Start with an atom and an ionic compound. The atom replaces on of the coumpounds. A + BC => AC + B |
Double Replacement - | 2 ionic compounds switch partners. AB + CD => AC + BD |
1 mole = | 6.02 x 10^23 |
1 mole of Boron = ____g? | 10.811. |
If I have 4.6 moles of Boron, how man atoms of B would that be? How many grams would that be? | Atoms: 4.6 moles B X [(6.02 x 10^23)/1 mole] = 2.8 x 10^24. Grams: 4.6 moles B x 10.811g = 50g B. |
Percent Composition = | (part/whole) x 100. |
Limiting Reagent - | the one that is used up first. |
% yield - | actual yield/theoretical yield. |
dissociation - | ionic compounds when dissolved in water or melted, the ions seperate to form each other, breaking apart the compound. |
dispersion - | covalent compounds seperate from others, but they shat whole molecules. |
Electrolytes - | compounds that will carry a charge when dissolved. |
strong electrolytes - | compounds that can carry a charge well when dissolved. |
weak electrolytes - | compounds that can carry a charge, just not a whole lot. |
non-electrolytes - | compounds that do not carry charges when dissolved in water. |