okayy sooo this matching thing is wierd.. i don't understand it..

Zeroth
First
Second

-Heat can change energy from one form to another, but the amount of energy in the universe is constant.
-Two objects in thermal equilibruim will have no net heat flow between them.
-The tendency of the universe is to increase entropy.

i don't understand how first or second or even zeroth even go to these... i didn't even no zeroth was a word!!
HELP PLEASE!!

Zeroth Law of Thermodynamics = two objects in thermal equilibruim will have no net heat flow between them.

**this only means that when two objects are in thermal equilibrium (or their temperature is the same/equal), heat is being transferred. this is a consequence of the principle that Energy flows from object of higher temperature to lower temperature, until their temperatures become the same.

First Law of Thermodynamics = heat can change energy from one form to another, but the amount of energy in the universe is constant.
**this is the famous one (for me, lol). it only means 'Energy can neither be created nor destroyed'.

Second Law of thermodynamics = the tendency of the universe is to increase entropy.
**the value entropy, S, can only be greater than or equal to zero, and can never be negative.

..me too. when i was studying thermodynamics, i thought 'Zeroth' was the last name of the person who developed the Zeroth Law of Thermo.. lol~

anyway, hope this helps~ :)

hahaha thank you! it helped a lot! :)

there was a typo. from the first paragraph,

...this only means that when two objects are in thermal equilibrium (or their temperature is the same/equal), NO heat is being transferred...

and the rest is ok. :)

actually, Jai, it is a little more complicated then NO. Heat is being transfered, but at equal rates, so no net heat transfer occurs. This is the essence of thermal equilibrium.

No problem, I'll explain how to match each statement with the corresponding zeroth, first, and second laws of thermodynamics.

First, let's briefly explain what those laws mean:
1. Zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, they are also in thermal equilibrium with each other.
2. First law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, it can only be transferred or converted from one form to another.
3. Second law of thermodynamics states that the total entropy of an isolated system always increases over time. Entropy is a measure of disorder or randomness in a system.

Now, let's match each statement with the laws:

1. "Heat can change energy from one form to another, but the amount of energy in the universe is constant." This statement relates to the first law of thermodynamics, as it emphasizes the conservation of energy. Energy can be converted or transferred, such as from thermal energy (heat) to mechanical energy or electrical energy, but the total amount of energy remains constant.

2. "Two objects in thermal equilibrium will have no net heat flow between them." This statement relates to the zeroth law of thermodynamics. The zeroth law states that if two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other. So, when two objects are in thermal equilibrium, they have the same temperature and no heat flows between them because there is no temperature difference to drive the transfer of heat.

3. "The tendency of the universe is to increase entropy." This statement relates to the second law of thermodynamics. The second law states that the entropy of an isolated system will always increase over time. Entropy is a measure of the system's disorder or randomness. The statement suggests that the overall disorder or randomness in the universe tends to increase, which aligns with the idea that the entropy of an isolated system continually increases.

To summarize:
- The first statement matches the first law of thermodynamics.
- The second statement matches the zeroth law of thermodynamics.
- The third statement matches the second law of thermodynamics.

I hope this explanation helps you to better understand the matching and the associated laws of thermodynamics.