Question 1

Which of the following is an example of a homogeneous mixture?

Accepted Answer

Brass (copper and zinc)

Question 2

A sample of gold is classified as which type of matter?

Accepted Answer

Element

Question 3

Which property is NOT a physical property of matter?

Accepted Answer

Ability to react with oxygen

Question 4

Which of the following changes is a chemical change?

Accepted Answer

Burning a log in a campfire

Question 5

A balloon filled with helium gas is an example of which state of matter?

Accepted Answer

Gas

Question 6

Which equation correctly converts Celsius to Fahrenheit?

Accepted Answer

$$T_F = 1.8(T_C) + 32$$

Question 7

A patient’s body temperature is 37.22 °C. What is this temperature in Kelvin?

Accepted Answer

$$310.4\ K$$

Question 8

Which of the following best describes potential energy?

Accepted Answer

Energy based on position or chemical composition

Question 9

How many calories are obtained from 150 J of energy? (Use $$1\ 	ext{cal} = 4.184\ 	ext{J})$$

Accepted Answer

36 cal

Question 10

A cup of whole milk contains 13 g of carbohydrate, 9 g of fat, and 9 g of protein. Using the caloric values (carbohydrate: 4 kcal/g, fat: 9 kcal/g, protein: 4 kcal/g), how many kilocalories does the cup contain?

Accepted Answer

169 kcal

Question 11

Which formula is used to calculate the amount of heat required to raise the temperature of a substance?

Accepted Answer

$$q = m c \Delta T$$

Question 12

Titanium has a specific heat of $$0.125\ 	ext{cal}/	ext{g}^\circ	ext{C}. $$How many calories are needed to raise the temperature of 16 g of titanium from $$36.0^\circ	ext{C} to$$ $$41.3^\circ	ext{C}$$?

Accepted Answer

11 cal

Question 13

What is the heat of fusion for water?

Accepted Answer

$$80\ 	ext{cal}/	ext{g}$$

Question 14

How much heat (in kJ) is absorbed when 260 g of ice melts at $$0^\circ	ext{C}$$? ($$\Delta H_{fusion} = 334\ 	ext{J}/	ext{g})$$

Accepted Answer

1.09 kJ

Question 15

Which process describes water changing from a liquid to a gas at its boiling point?

Accepted Answer

Vaporization

Question 16

Which of the following statements about gases is TRUE?

Accepted Answer

Gases have an indefinite shape and volume.

Question 17

Which of the following is a physical change?

Accepted Answer

Melting a piece of gold

Question 18

Which of the following is NOT a feature of the Kelvin temperature scale?

Accepted Answer

Uses degree symbol in front of K

Question 19

Which equation is used to convert Fahrenheit to Celsius?

Accepted Answer

$$T_C = \frac{T_F - 32}{1.8}$$

Question 20

Which of the following is a compound?

Accepted Answer

Water

Chapter 3 – Matter and Energy: Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드