Temperature and Heat

Question 1

Which best describes the difference between internal and thermal energy?

Revolt · Accepted Answer

Internal energy is the total potential and kinetic energies in a substance, and thermal energy is the part of internal energy that can be transferred to another substance.

Question 2

Gold atoms are heavier than iron atoms.Iron atoms are heavier than gold atoms.Gold atoms have the same mass as iron atoms.

Revolt · Accepted Answer

Gold atoms are heavier than iron atoms.

Question 3

List these drinks in order of kinetic energy, starting with the drink whose particles have the highest kinetic energy.

Revolt · Accepted Answer

hot chocolate, juice, milk, water

Question 4

How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°C to 363°C? The answer is expressed to the nearest whole number.

Revolt · Accepted Answer

132 joules

Question 5

Question 96846

Revolt · Accepted Answer

96844

Question 6

Zoe has 25 grams of water (c = 4.186 ) at 10°C, which she mixes with 12 grams of water at 30°C. Assume that no heat is lost to the surroundings.What is the final temperature of the two liquids? The answer is expressed to the nearest whole number.

Revolt · Accepted Answer

16°C

Temperature and Heat Answers

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