Final Flashcards
4 peice of info provided in a chemical RXn
Formula
States of matter
Relative number of molecules
Can predict the mass of reactant needed/ mass of product formed
4 visual clues of chemical RXn
Formation of a precipitate
Gas- bubbles
Flames- combustion
Absorption of heat
7 diatoms
Hydrogen G H2 Nitrogen G N2 Fluorine G F2 Oxygen G O2 Iodine S I2 Chlorine G Cl2 Bromine G Br2
Four changes in reaction conditions
High temp - strong heating T
Pressure- P
Energy-Greek nu ( electricity or ultraviolet light)
Catalyst- cat under yield sign if it is unknown
Common compounds
Water H2O
Methane CH4
Ammonia NH3
The Process of Balancing a word equation TTP
1- short form English (state of matter)
2- classify each substance
3- Chris cross applesauce to all cpds ( obey law of constant composition)
4-write unbalanced equation (state of matter)
5-list the players
6- count the atoms
7- add coefficients until it obeys the law of conservation of matter
8- simplify if possible
9- REMEMBER TO ADD THE STATES OF MATTER
State of matter for molecular compounds
Liquid
State of matter from most metals
Solid
State of matter of acids
Aqueous
State of matter for most ionic compounds salts
Solid
Define a chemical mole
Contains 6.022×10^ 23rd units
Define Stoichiometry
Process of using a balanced molecular equation to calculate the relative masses of reactants and products involved in the reaction
What is the theoretical yield
The maximum amount of a given product that can be formed when the reactant is completely consumed
What is the mole ratio
The ratio of moles of one substance to the moles of another substance in a balanced molecular equation
Define percent yield
The actual yield of a product as a percentage of the theoretical yield
