Chemical Reactions Flashcards
Law of conservation of matter
No matter is destroyed or created only modified
Chemical formula
Easy way to show a chemical reaction using symbols
Reactant
Substance at beginning of chemical reaction
Product
End of chemical reaction
Three ways chemical reaction can be classified
Synthesis decomposition replacement single double combustion
Synthesis
2+ elements or compounds creating a more complex substance
Decomposition
Breaking substance into simpler parts
Recomposition
2 compounds trading places
Synthesis
2+ substances creating something new
Decomposition often requires ____
Energy: heat/electricity
What is decomposition often used to separate
Compounds
Single replacement
One substance takes anothers place
Double replacement
Parts of everything switch
Combustion
Substance combines with oxygen
Trick for single
Element and compound
Trick for double
Compound and compound or 3 letter compound
Combustion trick
H2O and CO2
Synthesis trick
2 to 1
Decomposition trick
1 to 2
Precipitate
Solid that settles to bottom of mixture
