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

Which did you include in your response? Check all that apply.

Revolt · Accepted Answer

Thermal energy is the part of internal energy that can be transferred from one substance to another.; Heat is thermal energy that flows from a warmer substance to a cooler substance.

Question 3

What is the difference between thermal energy and heat?

Revolt · Accepted Answer

Heat is thermal energy that flows from a warmer substance to a cooler substance. Thermal energy is the part of internal energy that can be transferred.

Question 4

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 5

Which factors are needed to determine the amount of heat absorbed by an aluminum cube after it is warmed? Check all that apply.final temperature of the cubeinitial temperature of the cubemass of the cubemelting point of aluminumspecific heat of aluminumvolume of the cube

Revolt · Accepted Answer

final temperature of the cube; initial temperature of the cube; mass of the cube; specific heat of aluminum

Question 6

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 7

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

Revolt · Accepted Answer

132 joules

Question 8

Question 8

Revolt · Accepted Answer

121

Question 9

Zoe has 25 grams of water (c = 4.186 joules over grams times degrees Celsius ) 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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