predicting products & energy reactions

Question 1

name the basic steps to predicting products

Answer 1

1) Decide what type of reaction is happening
2) Use charges to determine the products
3) Balance the equation (it’s not right if it’s not
balanced)

Question 2

name the steps to predicting products for neutralization reactions

Answer 2

• So for every H you have you will need the same
number of OHs and vise versa
• Once you have the same number of H’s and OH’s
you will get the same number of waters
• The ions that are left over will be reacted together
to finish the equation off

Question 3

name the steps to predicting products for combustion reactions

Answer 3

• If there is a C in the original compound you will get
CO2
• If there is a S in the original compound you will get
SO2
• If there is a H in the original compound you will get
H20

Question 4

name the two types of energy reactions

Answer 4

1) Endothermic Reaction

2) Exothermic Reaction

Question 5

endothermic reaction

Answer 5

• Heat will ENTER the system in an endothermic rxn
• The products will be at a higher energy state
• More energy is required to break bonds
• The separated atoms now have more energy than
the original compound
• Because the system has taken energy in from the
surroundings the surroundings will feel COLD

Question 6

exothermic reaction

Answer 6

• Heat will EXIT the system in an exothermic rxn
• The products will be at a lower energy state than the
reactants
• less energy is required to break bonds
• products have less energy than reactants
• surroundings will feel HOT

Question 7

enthalpy

Answer 7

the heat contained in a system

Question 8

heat term in endothermic reaction

Answer 8

• ∆ H is positive (+) or have kJs on the reactant side

of a reaction

Question 9

heat term in exothermic reaction

Answer 9

• ∆ H is negative (‐) or have kJs of the products side

of a reaction