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Chemistry

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Webster Gutkowski

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Cards in this guide (13)
What is thermal energy

The total kinetic energy of the particles in a system

What is thermodynamics

the study of the movement of energy and heat.

or

Thermodynamics is the branch of physics concerned with the conversion of different energy forms.

•DeltaG (rxn) = DeltaG (pdts) - DeltaDG (rcts) •DeltaG°(rxn) = -R T ln K •

What is the nuclear decay equation for an example of alpha decay

The equation for the alpha decay of 239Pu is: 94239Pu --> 92235U + 24He

where 24He represents the alpha particle, which is a Helium nucleus.

A cat with two kittens are sleeping or A cat with two kittens is sleeping.

'with two kittens' describe the cat. So, you should write 'is sleeping'. But if you mean that all three of them are sleeping, write 'A cat and his two kittens are sleeping'.

What does it mean for heat to be transferred by radiation

Energy is transferred when molecules absorb electromagnetic waves.

Who created the model of the atom that has quantizied levels of energy
What variable represents thermal energy in the equation Q mcT

Type your answer here... The variable Q

What would cause entropy to decrease in a reaction

The products becoming more ordered than the reactants

What does the entropy of a reaction describe

The amount of randomness in the system

What would result in a transmutation

An alpha particle being emitted would result in a transmutation.

What statement best describes the potential energy diagram of an endothermic reaction

The potential energy of the products is greater than the potential energy of the reactants.

How is the delta H fusion used to calculate volume of liquid

It is not. The density and mass would be used to find the volume.

Which of the following is the best thermal insulator APEX

Air

(Explanation): water has a high specific heat capacity, but it can boil. stone (😂) also is a good thermal insulator, but it can get really hot. Metal is a very good thermal conductor, so it is definitely not that. Therefore, air is the best (its also really hard to boil).

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