Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
Combustion
|
reactions with oxygen
ex) 2H2(g)+O2 (g) => 2H2O(l) |
|
|
Decomposition
|
involves compounds decomposing into simpler substances
ex) H2CO3 (aq) => H2O (l) + CO2 (g) |
|
|
Single Replacement
|
*It's like someone cuts in while dancing*
ex) Zn (s) +CuCl2 (aq) => ZnCl2 (aq) + Cu (s) |
|
|
Double Replacement
|
reactions sometimes produce solid particles called a precipitate
*Both dance partners switching with another couple* ex) 2Ag (NO3) + CuCl2 => 2AgCl + Cu(NO3)2 |
|
|
Aqueous solution/symbol
|
something mixed with water
(aq) |
|
|
gas
|
(g)
|
|
|
liquid
|
(l)
|
|
|
solid
|
(s)
|
|
|
Mole
|
unity of quantity in chemistry that measures Avogardro's number
|
|
|
molar mass of an element
|
is the atomic weight in grams
|
|
|
formula weight of a compound
|
is the sum of the atomic weights of its component atoms expressed in amu
|
|
|
molar mass of a compound
|
is the formula weight in grams
|
|
|
mole ratio
|
can be used to determine the moles of an element present in a given number of moles of compound
|
|
|
percent composition of a compound
|
is a convenient way to represent the distribution of elements in a compound
|
|
|
molecular formula of a compound
|
is the actual formula of a compound
|
|
|
empirical formula of a compound can be calculated from the...
|
percent composition
|
|
|
One mol = ? atoms
|
6.02 x 10^23 atoms
|
|
|
One mol = ? molecules
|
6.02 x 10^23 molecules
|
|
|
One mol = ? ions
|
6.02 x 10^23 ions
|
|
|
Maximum number of electrons per shell
|
8
|
|
|
Modern Atomic Theory
|
matter is composed of discrete units called atoms; atoms are composed of protons, neutrons and electrons
|
|
|
Bohr Model
|
depicts the atom as small, with a positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus
|
|
|
Limiting reactant
|
The reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed.
|
|
|
percent yield
|
the amount of product obtained in a chemical reaction
|
|
|
exothermic reaction
|
release energy in form of light or heat
|
|
|
endothermic reaction
|
absorbs energy
|
|
|
Avogadro's number
|
6.02 x 10^23
|
