Exo vs Endo 1
Taking heat from the environment
Melting is ___________ process
Endothermic
What is it when two things react to make one new thing
Synthesis/Combination
What happens to the rate of reaction if temperature goes from 35oF to 55oF?
Increases
Balance:
____FeI2 → ____HCl → ____FeCl2 + ____HI
1:2:1:2
Cooking an egg
Egg, Endothermic
Endothermic is _________________________
when heat is absorbed
When one element replaces a similar element in a compound
Single Replacement
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A crowded hallway is an example of what rate of reaction?
Concentration
Balance:
____LiF + ____Be3N2→ ____Li3N + ____BeF2
6:1:2:3
Burning a match: is the match releasing heat or taking heat from the environment?
Releasing heat
Exothermic is __________________________
when heat is released
When a hydrocarbon reacts with O2 to create H2O and CO2
Combustion
Which would have a higher rate of reaction:
Cubes of Sugar or Grains of Sugar
Grains of Sugar
*THEY'RE SMALLER*
Balance:
____C6H12 + ____O2 →____ CO2 + ____H2O
1:9:6:6
What is the system and the process (exo/endo) for the following:
Morning dew forming on grass and plants
Dew/Water vapor, Exothermic
Condensing is _________________
Exothermic
When a compound is broken down.
This is a substance that helps speed up the reaction without changing the products of the reaction
Catalyst
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Balance:
____Fe + ____Pb(NO3)2 → ____Fe(NO3)3 + ____Pb
2:3:2:3
When water freezes, is it releasing heat or taking heat from the environment?
Releasing heat
Boiling is _______ while freezing is _____________
Endothermic, Exothermic
Two ionic compound reactants switch ions forming two new ionic compounds
Double Replacement
This only affects gaseous reactants
Pressure
Balance:
____BF3 +____ Li2(SO3) → ____B2(SO3)3 + ____LiF
2:3:1:6