Classmates
The amount of students in the class
What is twenty three
This is the smallest unit of an element that retains its chemical properties.
What is an atom?
Hess’s Law is used to calculate this type of energy change in a reaction.
What is enthalpy (ΔH)?
T or F, Enthalpy is conserved during a rxn.
What is false?
The study of heat transferred in a chemical reaction
What is calorimetry?
Rumor says he made the best sketchup Dr. Akatugba has seen
Who is Avery
The number of protons in an atom is known as this.
What is the atomic number?
The mathematical operation typically used to combine enthalpy changes in Hess’s Law.
What is addition?
The number of heat units needed to raise the temp of a body by one degree
What is heat capacity?
Q=mcdeltaT
What is the formula for calorimetry
Chris does these Var. Sports for Skyline
What is Track and XC?
This principle states that matter cannot be created or destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
If you reverse a chemical equation in Hess's Law, this happens to the sign of ΔH.
What is it becomes opposite (or switches signs)
This is more easily measured of the two "change in enthalpy" "total enthalpy"
What is change in Enthalpy?
The kind of reaction combustion is
What is an exothermic reaction?
In a band named "Bone Thistle"
Who is Silvio?
This type of bond forms when electrons are shared between atoms.
What is a covalent bond?
This is the ΔH for a reaction if step A has ΔH = -100 kJ and step B has ΔH = 50 kJ.
What is -50kj
What is randomness
When two objects with different temperature come in contact heat will flow from the warmer object to the colder until this happens.
What is have an equal temp?
Is always eating lunch or heating it up in a microwave
who is bao
The amount of energy required to remove an electron from an atom is called this.
What is ionization energy?
Hess's Law is a direct consequence of this broader scientific principle.
What is the conservation of energy
The unit commonly used to express ΔH values in thermochemistry.
What is kilojoules per mole (kJ/mol)?
A piece of metal with a mass of 32.8g is heated to 100.5C and dropped into 138.2g of water at 20C. The final temp of the system is 30.2C, this is the heat capacity of the metal.
What is 2.56 J/gC