Question

question 4

which has higher entropy:

melted ice
frozen ice

question 5

in physics, conservation of energy means:

energy can neither be created nor destroyed
we need to use alternative to fossil fuels
energy is conserved in the atmosphere
it is our collective responsibility to conserve energy

question 6

thermodynamics studies the energy and energy transfer involving physical matter.

true
false

Explanation:

Analyze entropy in phase changes

Liquid water has more molecular disorder than solid ice.
Using the Second Law of Thermodynamics knowledge point, higher disorder corresponds directly to higher entropy.
Therefore, melted ice has higher entropy than frozen ice.

Define conservation of energy

In physics, conservation of energy is a fundamental law.
It states that the total energy of an isolated system remains constant.
This means energy can neither be created nor destroyed, only transformed.

Define thermodynamics

Thermodynamics is a branch of physics.
It deals with heat, work, temperature, and their relation to energy and radiation.
Specifically, it studies energy and energy transfer involving physical matter.
Thus, the statement is true.

Answer:

Question 4

• melted ice (Correct answer)
• frozen ice

Question 5

• energy can neither be created nor destroyed (Correct answer)
• we need to use alternative to fossil fuels
• energy is conserved in the atmosphere
• it is our collective responsibility to conserve energy

Question 6

• True (Correct answer)
• False