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100
Heat always flow from _______________ to _________________.
Hot to Cold
100
What is the term for the amount of randomness or disorder in a system?
Entropy
100

If the word "heat" appears in the reactant side on a chemical equation, the reaction is (endo or exo)

What is endothermic. 

100

What type of reactions release energy?

What is Exothermic

100

The energy of a moving object.

What is kinetic Energy

200
The difference between the energy of the reactants and the energy of the products is called what?
Enthalpy
200
What is the term for the minimum amount of energy needed to start a reaction?
Activation Energy
200
In a ________________ reaction, the energy of the products is higher than that of the reactants.
Endothermic
200

What is the term for the "average kinetic energy" of particles?

What is Temperature

200

Type of energy transformation when a windmill uses energy to produce electricity

What is mechanical to electrical energy

300
The type of energy transfer present when you touch a hot object. 
What is conduction. 
300

True or False:  Both energy AND matter can move through a closed system. 

False

300
What happens to entropy when water freezes to ice?
It decreases
300
The equation for total energy of a reaction
What is bonds broken - bonds formed.
300

Type of energy transformation when the sun is used to light your walkway (using solar lights). 

What is electromagnetic to light energy. 

400

The type of energy transfer when the sun heats the inside of your car. 

What is radiation. 

400
Name 2 endothermic reactions or phase changes.
Baking Bread Melting
400
What 2 conditions must be true for a reaction to be spontaneous? *Think Entropy & Enthalpy
Exothermic & Positive Entropy
400

The energy of the H-H bond is 432 kJ/mol.  The energy of the O-H bond is 467 kJ/mol.  Which bond is stronger? 

What is the O-H bond. 
400

The type of energy that a ball has on the top of a hill

What is potential energy

500

What happens to temperature during a phase change? & WHY?

It stays the same because the energy being added goes into breaking the bonds.

500
Name a way to increase the entropy of a system.
Heat it up
500

An ice cube is placed in a cup of warm water.  What happens to the total energy of the system?

It will stay the same. 

500

On an energy graph, the length of the vertical arrow point up represents _____. 

What is the amount of energy put into the system. 
500

Two types of potential energy

What are gravitational and chemical 

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