Chemistry Unit 2 - Chemical Reactions Flashcards
Law of Conservation of Mass (2)
1)No matter can be destroyed or created
2) Mass reactant = Mass Product
When two aqueous solutions are mixed, they can form a chemical reaction where…
A precipitate is made
If no precipitate is made from a reaction that means no ____________
reaction
Synthesis with oxygen involved (acidic oxides)
CO2 + H2O —>
H2CO3 (acid)
Sythesis with basic oxide
Na2O + H2O——>
NaOH (base)
Decomp. w/ complex compounds
1) Carbonates
CaCO3 —->. main rule, will always make ?
CaO + CO2
[metal oxide] + Carbon dioxide
Decomp. w/ complex compounds
2) Nitrates
KNO3 —-> will always make?
KNO2 + O2
____nitrogen dioxide + oxygen
In single displacement, when a metal is single and greater on the activity Series, can it bump out the metal in the pair? Why or why not?
YES; higher on acitvity series
In single displacement, when a metal is single and lower on the activity Series, can it bump out the metal in the pair? Why or why not?
NO, b/c it is by itself and lower on the Activity Series
SD reactions involving metal and compounds containing hydrogen 1) water
-What does the water act as?
-Na + H20—–>
- will always create?
Ionic compound
NaOH + H2
basic solution and H2 (reaction makes bubbles)
SD reactions involving metal and compounds containing hydrogen 2) Acids
-Treat acid like a _________ compound
-Li + H2SO4—–>
-Will always have?
ionic
LiSO4 + H2
will always make H2
-it bumps out H from acid because H is diatomic
DD reactions producing gas 1) Directly
HCl + K2S—->
Sulfides (_S) always produce ?
H2S + KCl
ALways produce H2S (hydrogen sulfide)
DD reactions producing gas 2) Indirectly
Hcl + Na2CO3—->
Carbonates will always produce?
water and gas (SO2)
always : carbon dioxide
Sulfites like K2SO3 will always produce ?
SO2 (sulfur dioxide)
HCl + NaOH —> NaCl + H20
neutralization reaction with hydroxide
acid + base = ionic compound + water
H2SO4 + Li2CO3—> Li2SO4 + H2O + CO2
neutralization reaction with carbonates
acid + carbonate —> ionic compound + water + carbon dioxide
3 things incomplete combustion does
1) release energy portionally
2) Produce harmful soot particles
3) Possible carbon monoxide poisoning
How can Incomplete combustion be useful?
starting gasoline-powered devices (lawnmower)
Complete Combustion issues
Greenhouse gases = climate change
products of incomplete combustion
water (H2O) + Soot (C) + Carbon monoxide (CO)
non-metal oxide and water
acid + H2O
metal oxide and water
Base + H2O
Phenolphthalein ACID NEUTRAL BASE
Colourless, colourless, pink
Bromothymol Blue ACID NEUTRAL BASE
yellow , green, blue
Universal Indicator ACID NEUTRAL BASE
Red, green, blue (purple)
Hydrate
a solid compound with water molecules chemically bonded into crystal structure
