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;
21 Cards in this Set
- Front
- Back
|
single displacement
|
one element trades places with another element in a compound
|
|
|
combustion
|
oxygen combines with another compound to form water and carbon dioxide. These reactions are exothermic
|
|
|
synthesis
|
when two or more simple compounds combine to form a more complicated one.
a+b------>ab |
|
|
decomposition
|
opposite of a synthesis reaction - a complex molecule breaks down to make simpler ones
ab---->a+b |
|
|
double displacement
|
two elements switch places in two compounds
|
|
|
Second step in balancing equations
|
count the number of atoms
|
|
|
First step in balancing equations
|
write the unbalanced equation
|
|
|
Third step in balancing eqautions
|
add coeffcients to make numbers equal coeffcients x subscripts = number of atoms (DONT TOUCH SUBSCRIPTS)
|
|
|
Fourth step in balancing eqautions
|
reduce coeffcient to lowest possible ratioon if neccesary
|
|
|
Fifth step in balancing eqautions
|
double check atom balance
|
|
|
tempature (reaction rates)
|
speeds up reaction rates
ex:burning toast |
|
|
surface area (reaction rates)
|
higher surface area - faster reaction rates
ex:slice potatp cooks faster than whole |
|
|
Concentration (reaction rates)(how much)
|
when concentration is higher = faster reaction rate
ex:drop of bleach compared to gallon of bleach |
|
|
catalysts
|
speeds up reaction rates
|
|
|
inhibitors
|
slow rxn's down
|
|
|
diatomic atoms
|
carbon,nitrogen,oxygen,flurione,chlorine,bromine,iodine,astatine,hydrogen (Big 7 and hydrogen)
|
|
|
endothermic(in-do-therminc)
|
takes IN the heat realses the cold
|
|
|
exothermic(exit-thermic)
|
realeses heat takes in cold heat exits
|
|
|
reactants
|
things in chemical rxn's
|
|
|
products
|
the final result of chemical rxn's
|
|
|
don't forget the oxidation number
|
criss cross the numbers
|
