WorksheetsMay 4 - May 8 (Bond Energy Practice)
Total questions: 15
Worksheet time: 1hrs 15mins
Breaking a chemical bond...
requires energy
releases energy
is unrelated to energy
Forming a chemical bond...
requires energy
releases energy
is unrelated to energy
An exothermic reaction...
requires energy
releases energy
is unrelated to energy
An endothermic reaction...
requires energy
releases energy
is unrelated to energy
Which of the following best describes what happens during a chemical reaction?
Atoms always form stronger bonds.
New atoms are added or removed to create new molecules.
The number and type of each atom stays the same, but they rearrange to form new molecules.
Atoms always form weaker bonds.
Which bond stores the least energy per mole?
C-H
N-H
H-H
C=C
Which bond stores the most energy per mole?
C-H
N-H
H-H
C=C
How much energy is required to break the bonds of the reactants?
Use the table called "Average Bond Enthalpies."
1367 kJ/mol
1852 kJ/mol
495 kJ/mol
485 kJ/mol
How much energy is released during the formation of the products?
Use the table called "Average Bond Enthalpies."
1367 kJ/mol
1852 kJ/mol
495 kJ/mol
485 kJ/mol
How much energy is required to break the bonds of the reactants?
Use the table called "Average Bond Enthalpies."
242 kJ/mol
436 kJ/mol
678 kJ/mol
862 kJ/mol
Does this reaction release energy or absorb energy?
Use the table called "Average Bond Enthalpies."
This reaction releases energy.
This reaction absorbs energy.
How much energy is released when the products form new bonds?
Use the table called "Average Bond Enthalpies."
242 kJ/mol
436 kJ/mol
678 kJ/mol
862 kJ/mol
Does this reaction release energy or absorb energy?
Use the table called "Average Bond Enthalpies."
This reaction releases energy.
This reaction absorbs energy.
How much energy is stored in the bonds of this molecule?
1184 kJ/mol
1625 kJ/mol
1898 kJ/mol
How much energy is stored in the bonds of this molecule?
1312 kJ/mol
1528 kJ/mol
1898 kJ/mol
