
Enthalpy and Energy Concepts in Chemistry

Interactive Video
•
Chemistry, Science
•
10th - 12th Grade
•
Hard

Jackson Turner
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of using the Born-Haber cycle in this context?
To determine the melting point of magnesium fluoride
To calculate the enthalpy of formation of magnesium fluoride
To find the boiling point of magnesium fluoride
To measure the density of magnesium fluoride
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is lattice energy?
The energy change when a liquid becomes a gas
The energy required to break a covalent bond
The energy needed to convert a solid to a liquid
The energy change when gaseous ions form a solid ionic compound
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first ionization energy of magnesium?
The energy required to add an electron to a gaseous atom
The energy needed to remove an electron from a gaseous magnesium atom
The energy change when magnesium reacts with water
The energy required to break a bond in magnesium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it necessary to modify the reaction for electron affinity of fluorine?
To match the number of gaseous fluorine atoms
To ensure the reaction is balanced
To increase the reaction rate
To decrease the energy change
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the term 'sublimation' refer to?
The process of a gas turning into a liquid
The conversion of a solid directly into a gas
The transformation of a liquid into a solid
The change of a gas into a solid
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the enthalpy of sublimation for magnesium?
Positive 150 kJ/mol
Negative 150 kJ/mol
Positive 735 kJ/mol
Negative 735 kJ/mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the enthalpy of formation of magnesium fluoride calculated using Hess's Law?
By adding up all the energy changes from the reactions
By dividing the sublimation energy by the ionization energy
By multiplying the bond energy by the electron affinity
By subtracting the lattice energy from the ionization energy
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