CHM Unit 2

Select the correct symbol for the element named. Iron A) Ir B) Fs C) Fe D) In E) FE

Fe

Which of the following properties is NOT a characteristic of the Group 1A elements? (alkali metals) A) They are shiny B) they are

...

5.21 cm is the same distance as A) 0.0521 m B) 52.1 dm C) 5.21 mm D) 0.00521 km E) 5210 m

0.0521 m

What is the correct answer for the calculation of a volume (in mL) with measured numbers 28.58/16 × 8.02? A) 0.22 mL B) 0.223 mL C) 57 mL D) 14 mL E) 14.3 mL

0.22 mL

Which of the following measurements has three significant figures? A) 0.005 m B) 510 m C) 0.510 m D) 0.051 m E) 5100 m

0.510 m

What is the metric relationship between grams and micrograms? A) 1 g = 100 μg B) 1 g = 1,000,000 μg C) 1 g = 0.000001 μg D) 1 g = 1000 μg E) 1 g = 0.001 μg

1 g = 1,000,000 μg

A 50.0 mL urine sample has a mass of 50.7 g. The specific gravity of the urine is A) 1.014 g/mL B) 0.986 g/L C) 1.01 D) 0.986 E) 50.7

1.01

The density of a solution is 1.18 g/mL. Its specific gravity is A) 11.8 B) 0.118 C) 0.847 D) 1.18 E) 1.2

1.18

A liquid has a volume of 34.6 mL and a mass of 46.0 g. What is the density of the liquid? A) 1.00 g/mL B) 1.33 g/mL C) 0.752 g/mL D) 1330 g/mL E) 0.663 g/mL

1.33 g/mL

According to the United States Food and Drug Administration, the recommended daily requirement of protein is 44 g. This is __________ of protein. A) 1248.5 oz B) 320,000 oz C) 1.6 oz D) 0.0605 oz E) 150,000 oz

1.6 oz

What is 6.5 m converted to inches? A) 1700 in B) 1651 in C) 39 in D) 260 in E) 255.9 in

260 in

What is the conversion factor for the relationship between millimeters and centimeters? A) 1 mm/ 1 cm B) 10 mm/ 1 cm C) 1 cm/ 1 mm D) 100 mm/ 1 cm E) 10 cm/ 1 mm

10 mm/ 1 cm

A kilocalorie of heat is required to raise the temperature of

100 g of water by 10°C

The dietary calorie is equal to A) 1000 kcals B) 1000 cals C) 100 cals D) 10 cals E) 1 calorie

1000 calories

A patient has a temperature of 38.5°C. What is the temperature in degrees Fahrenheit? A) 70.5°F B) 311°F C) 126.9°F D) 101.3°F E) 11.7°F

101.3°F

What is the answer, with the correct number of decimal places, for this problem? 4.392 g + 102.40 g + 2.51 g = A) 109.302 g B) 109 g C) 109.3 g D) 109.30 g E) 110 g

109.30 g

The heat of vaporization for water is 540 cal/g. How many kilocalories are needed to change 22 g of liquid water to steam at 100°C? A) 540 kcal B) 12 kcal C) 12000 kcal D) 25 kcal E) 1.8kcal

12 kcal

A slice of pizza contains 28g of carbohydrate, 13g of protein and fat. if the pizza contains 280 kcal, how many grams of fat are present? A) 28 g B) 13 g C) 10 g D) 55 g E) 250 g

13 g

The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is A) 13.071 g B) 13 g C) 13.0 g D) 10 g E) 13.1 g

13 g

How many kilograms are in 30.4 lb? A) 13.8 kg B) 14 kg C) 67 kg D) 66.99 kg E) 66.9 kg

13.8 kg

The number of calories needed to raise the temperature of 32 g of water from 12°C to 54°C is A) 384 cal B) 1.3 cal C) 1300 cal D) 1700 cal E) 0.76 cal

1300 cal

3.25 kcal is the same amount of energy as A) 3.25 J B) 0.777 J C) 777 J D) 13600 J E) 13.6 J

13600 J

How many centimeters are there in 57.0 in.? A) 22 cm B) 0.0445 cm C) 145 cm D) 22.4 cm E) 140 cm

145 cm

650 J is the same amount of energy as A) 155 cal B) 2720 cal C) 650 cal D) 1550 cal E) 2.72 cal

155 cal

Which of the following numbers contains the designated CORRECT number of significant figures? A) 0.04300 - 5 sig figs B) 0.00302 - 2 sig figs C) 156,000 - 3 sig figs D) 1.04 2 - 2 sig figs E) 3.0650 - 4 sig figs

156,000 - 3 significant figures

The heat of fusion for water is 80 cal/g. How many calories of heat are released when 20.0 g of water at 0°C is frozen to ice? A) 600 cal B) 1600 cal C) 2000 cal D) 2200 cal E) 0 cal

1600 cal

A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is A) 19 mg B) 53 mg C) 1.6 mg D) 5.0 mg E) 0.59 mg

19 mg

A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold? A) 10.4 g/mL B) 6.77 g/mL C) 1.00 g/mL D) 0.0518 g/mL E) 19.3 g/mL

19.3 g/mL

What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL? A) 0.023 kg B) 2.30 kg C) 1.15 kg D) 0.015 kg E) 0.58 kg

2.30 kg

A doctor's order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL. How many milliliters of the suspension are required? A) 0.0025 B) 3.0 mL C) 2.5 mL D) 6.3 mL E) 0.0063 mL

2.5 mL

A conversion factor set up correctly to convert 15 inches to centimeters is A) 100 cm/1 m B) 1 inch/2.54 cm C) 1 cm/10 mm D) 2.54 cm/1 inch E) 10 cm/1 inch

2.54 cm/1 inch

If the heat of vaporization for water is 540 cal/g, how many calories are released when 5.00 g of steam is converted to liquid at 100°C? A) 540 kcal B) 5.0 kcal C) 110 kcal D) 2.7 kcal E) 5.4 kcal

2.7 kcal

Which of the following examples illustrates a number that is correctly rounded to three significant figures? A) 4.05438 grams to 4.054 grams B) 0.03954 grams to 0.040 grams C) 103.692 grams to 103.7 grams D) 109,526 grams to 109,500 grams E) 20.0332 grams to 20.0 grams

20.0332 grams to 20.0

If the temperature is -55°F, what is the corresponding temperature on the Kelvin scale? A) 225 K B) 218 K C) 55 K D) 273 K E) 328 K

225 K

Which of the answers for the following conversions contains the correct number of significant figures? A) 2.543 m × 39.4 in/1 m = 100.1942 B) 2 L × 1.06 qt/1 L = 2.12 qt C) 24.95 min × 1 hr/60 min = 0.4158 hr D) 12.0 ft x 12 in/1 ft × 2.54 cm/ 1 in = 370 cm E) 24.0 kg × 1 lb/2.20 kg = 11 lb

24.95 min × 1 hr/60 min = 0.4158 hr

A serving of fish contains 50 g protein and 4 g of fat. If protein has a caloric value of 4 kcal/g and fat has 9 kcal/g, how many kcal are in the serving? Give the answer to 2 significant figures. A) 240 kcal B) 54 kcal C) 470 kcal D) 220 kcal E) 490 kcal

240 kcal

One cup of kidney beans contains 15 g of protein, 1 g of fat, and 42 g of carbohydrate. How many kilocalories, to two significant figures, does this sample contain? (the caloric values are: 4 kcal/g for carbohydrate, 9 kcal/g for fat, and 4 kcal/g for protein.) A) 60 kcal B) 88 kcal C) 230 kcal D) 240 kcal E) 520 kcal

240 kcal

Which of the following conversion factors is a measured number? A) 10 cm/dm B) 12 in/ft C) 16 oz/lb D) 25 miles/gallon E) 12 eggs/dozen

25 miles/gallon

Mercury has a specific gravity of 13.6. How many milliliters of mercury have a mass of 0.35 kg? A) 0.0257 mL B) 0.026 mL C) 25.7 mL D) 26 mL E) 4760 mL

26 mL

What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL? A) 1.70 g/mL B) 1.7 g/mL C) 25.7 mL D) 26 mL E) 4760 mL

26 mL

When 2610 + 11.7 + 0.22 are added, the answer to the correct number of decimal places is A) 2621.92 B) 2621.9 C) 2622 D) 2620 E) 2600

2620

The heat of fusion for water is 80 cal/g. How many calories of heat are needed to melt a 35 g ice cube that has a temperature of 0°C? A) 2300 cal B) 1600 cal C) 2800 cal D) 540 cal E) 0 cal

2800 cal

If the heat of fusion for water is 80 cal/g, how many calories are needed to melt 45.0 g of ice at 0°C? A) 3.6 cal B) 3.6 × 10^3 cal C) 1.8 cal D) 80 cal E) 0.56 cal

3.6 × 10^3 cal

On a hot day, the thermometer read 95°F. What is the temperature in degrees Celsius? A) 77°C B) 113°C C) 35°C D) 63°C E) 178°C

35°C

A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. How many kcal of energy does the cheeseburger contain? A) 70 kcal B) 360 kcal C) 17 kcal D) 630 kcal E) 280 kcal

360 kcal

How many calories are required to raise the temperature of a 35.0 g sample of iron from 25°C to 35°C? Iron has a specific heat of 0.108 cal/g °C. A) 38 cal B) 1.1 cal C) 3.8 cal D) 93 cal E) 130 cal

38 cal

Diamond has a density of 3.52 g/mL. What is the volume in cubic cm of a diamond with a mass of 15.1 g? A) 4.3 cm^3 B) 4.29 cm^3 C) 0.233 cm^3 D) 53 cm^3 E) 53.2 cm^3

4.29 cm^3

The measurement 0.0000043 m, expressed correctly using scientific notation, is A) 4.3 × 10^-7 m B) 4.3 × 10^-6 m C) 4.3 × 10^6 m D) 0.43 × 10^-5 m E) 4.3 m

4.3 × 10^-6

How many liters of soft drink are there in 5.25 qt? A) 4950 L B) 55.7 L C) 4.95 L D) 5.57 L E) 5.0 L

4.95 L

The EPA limit for the lead in the soil of play areas is 400 ppm. This is the same as A) 400 mg lead in each gram of soil B) 400 g lead in each kilogram of soil C) 400 mg lead in each kilogram of soil D) 400 μg lead in each kilogram of soil E) 400 μg lead in each milligram of soil

400 mg lead in each kilogram of soil

What is the mass of 53 mL of ethyl alcohol, which has a density of 0.79 g/mL? A) 67.1 g B) 41.9 g C) 42 g D) 67 g E) 53 g

42 g

A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported? A) 423 B) 424 C) 420 D) 423.6 E) 423.7

424

1.00 pint of milk has a volume of how many milliliters? A) 472 mL B) 530 mL C) 1000 mL D) 1890 mL E) 106 mL

472 mL

A temperature of 41°F is the same as A) 5°C B) 310°C C) -9°C D) 16°C E) 42°C

5°C

If the temperature is 20°C, what is the corresponding temperature on the Fahrenheit scale? A) -22°F B) 68°F C) 43°F D) 239°F E) 94°F

68°F

How many calories are required to raise the temperature of a 150 g sample of gold from 25°C to 175°C? The specific heat of gold is 0.0308 cal/g °C. A) 4.62 cal B) 116 cal C) 22500 cal D) 693 cal E) 130 cal

693 cal

How many pounds are in 3.5 kg? A) 7.7 lb B) 1.59 lb C) 0.629 lb D) 1.6 lb E) 7.70 lb

7.7 lb

The temperature of liquid nitrogen is -196°C. What is the corresponding reading on the Kelvin scale? A) 77 K B) -127 K C) -91 K D) 48 K E) 146 K

77 K

A potato contains 20 g of carbohydrate. If carbohydrates have a caloric value of 4 kcal/g, how man kcal are obtained from the carbohydrates in the potato? A) 5 kcal B) 20 kcal C) 40 kcal D) 60 kcal E) 80 kcal

80 kcal

Which of the following measurements are NOT equivalent? A) 25 mg = 0.025 g B) 183 L = 0.183 kL C) 150 msec = 0.150 sec D) 84 cm = 8.4 mm E) 24 dL = 2.4 L

84 cm = 8.4 mm

How many calories are required to increase the temperature of 13 g of alcohol from 11°C to 23°C? The specific heat of alcohol is 0.59 cal/g °C. A) 83 cal B) 0.63 cal C) 92 cal D) 0.54 cal E) 170 cal

92 cal

9.31 g is the same mass as A) 931 μg B) 931 kg C) 93.1 cg D) 9310 mg E) 0.0931 dg

9310 mg

Select the correct symbol for the element named. Aluminum A) Al B) Am C) Au D) Sn E) Ag

Al

True/False Steam at 100°C holds the same of amount of heat as water at 100°C.

False

True/False The heat of fusion of water is larger than the heat of vaporization.

False

True/False Condensation occurs when a liquid is converted to a solid.

False

True/False Water freezes at 100°C.

False

Select the correct symbol for the element named. Mercury A) Mr B) Na C) Au D) Hg E) Au

Hg

Potassium A) P B) Po C) Pt D) K E) Ko

K

The cubic centimeter has the same volume as a A) cubic inch B) cubic liter C) milliliter D) centimeter E) cubic decimeter

Milliliter

Select the correct symbol for the element named. Sodium A) So B) Na C) No D) Sm E) Au

Na

Which of the following is a characteristic of the modern periodic table? A) A group is a horizontal row on the periodic table. B) A period is a column on the periodic table. C) The elements in each group have similar chemical properties D) The B groups contain the representative elements E) The A groups contain the transition elements

The elements in each group have similar chemical properties.

Which of the following is a property of a solid? A) It takes the shape of the container B) It fills the volume of the container C) The particles move at a rapid rate D) The interactions between its particles are very week E) The particles have fixed positions and are very close together

The particles have fixed positions and are very close together

The specific heat of copper is 0.093 cal/g °C, and the specific heat of silver is 0.057 cal.g °C. If 100 cal of heat is added to one g of each metal at 25°C, what is the expected result? A) The copper will reach a higher temperature B) The silver will reach a higher temperature C) The two samples will reach the same temperature D) The copper will reach a temperature lower than 25°C E) The silver will soften

The silver will reach a higher temperature

Which of the following does NOT represent a step on the heating curve of water? A) The temperature of steam cannot exceed 100°C B) The temperature of ice remains at 0°C as it melts C) The temperature of liquid water increases linearly as it is heated D) The temperature of liquid water remains at 100°C as it boils E) Both liquid water and ice are present at 0°C

The temperature cannot exceed 100°C

True/False As heat is removed from a solid, its temperature decreases.

True

True/False Carbohydrates and proteins have the same caloric value per gram.

True

True/False The temperature at which water melts and freezes is the same.

True

True/False Water vapor is a gas

True

True/False When liquid is boiling, its temperature does not change.

True

On a heating curve, a plateau corresponds to

a change of state

Which of the following substances will float in gasoline, which has a density of 0.66 g/mL? A) table salt (d = 2.16 g/mL) B) balsa wood (d = 0.16 g/mL) C) sugar (d = 1.59 g/mL) D) aluminum (d = 2.70 g/mL) E) mercury (d = 136 g/mL)

balsa wood

What elements are in hydroxyapatite, Ca5(PO4)3OH, a major compound in human bones and teeth? A) carbon, potassium, oxygen, hydrogen B) calcium, phosphorous, oxygen, hydrogen C) carbon, phosphorous, oxygen, helium D) calcium, phosphorous, oxygen, helium E) carbon, potassium, oxygen, helium

calcium, phosphorous, oxygen, hydrogen

Which of the following setups would convert centimeters to feet? A) cm × 2.54 in/1 cm × 1 ft/12 in B) cm × 2.54 cm/1 in × 12 in/ 1 ft C) cm × 1 in/ 2.54 cm × 1 ft/ 12 in D) cm × 1 in/ 2.54 cm × 12 in/ 1 ft E) cm × 2.54 cm/1 in × 1 ft/12 in

cm × 1 in/ 2.54 cm × 1 ft/ 12 in

The ratio of the mass of a substance to its volume is its A) specific gravity B) density C) buoyancy D) weight E) conversion factor

density

Which of the following is often used to determine an individual's percentage of body fat? A) temperature B) height C) weight loss D) weight gain E) density

density

A value of 345 mm is a measure of A) density B) mass C) temperature D) volume E) distance

distance

Gold in a ring is a(n) A) compound B) heterogeneous mixture C) element D) homogenerous mixture E) none of the above

element

Helium is a(n) A) compound B) heterogeneous mixture C) element D) homogenerous mixture E) electron

element

The primary substances of which all other things are composed are A) molecules B) compounds C) elements D) electrons E) protons

elements

The phrase "ability to do work" is a definition of A) specific heat B) energy C) calorie D) heating E) cooling

energy

The formation of a gas resulting from the escape of high-energy particles from the surface of a liquid is known as

evaporation

The number of significant figures in the measurement of 45.030 mm is A) none B) three C) four D) five E) six

five

Au is the symbol for A) gold B) silver C) argon D) aluminum E) sodium

gold

Which of the following is a physical property of both liquids and gases?

has randomly arranged particles

The energy associated with the motion of particles in a substance is called A) temperature B) electrical energy C) heat D) chemical energy E) potential energy

heat

Coins in a piggy bank is a(n) A) compound B) heterogeneous mixture C) element D) homogenerous mixture E) none of the above

heterogenous mixture.

Air is a(n) A) compound B) heterogeneous mixture C) element D) homogeneous mixture E) none of the above

homogeneous mixture

Which of the following is a measurement of mass in the metric system? A) milliliter B) centimeter C) kilogram D) Celsius E) meter

kilogram

Which of the following is the largest unit? A) millimeter B) micrometer C) meter D) decimeter E) kilometer

kilometer

The energy of motion is referred to as A) work B) freezing C) specific heat D) potential energy E) kinetic energy

kinetic energy

Which of the following is the basic unit of volume in the metric system? A) liter B) kilogram C) meter D) centimeter E) gram

liter

Which of the following is the smallest unit? A) gram B) milligram C) kilogram D) decigram E) microgram

microgram

In which of the following is the metric unit paired with its correct abbreviation? A) microgram / mg B) milliliter / mL C) centimeter / km D) kilogram / cg E) gram / gm

milliliter / mL

Global warming is believed to result from all of the following except A) burning of fossil fuels B) increasing levels of carbon dioxide in the atmosphere C) deforestation D) movement of the earth closer to the sun E) carbon dioxide trapping the heat produced by the sun

movement of the earth closer to the sun

Which of the following properties describes a liquid?

particles are close together and move randomly

The energy stored in chemical bonds is A) specific heat B) kinetic energy C) potential energy D) work E) a calorie

potential energy

Which of the following does NOT involve a change of state? A) melting ice B) freezing water C) vaporization of alcohol D) sublimation of dry ice E) pouring water into a vacuum-insulated bottle

pouring water into a vacuum-insulated bottle

The specific heat of a substance is the amount of heat needed to

raise the temperature of 1 g of the substance by 1°C

An example of kinetic energy is A) a coiled spring B) running water C) a tree D) natural gas E) chemical energy

running water

The physical state(s) present when a substance is melting is (are)

solid & liquid

In which of the following would the particles move most rapidly? A) ice at -20°C B) water at 20°C C) steam at 110°C D) boiling water E) ice at 0°C

steam at 110°C

When a solid is converted directly to a gas, the change of state is called

sublimation

A value of 25° C is a measurement of A) distance B) volume C) temperature D) mass E) density

temperature

A heating curve illustrates

the changes in the temperature and physical state of a substance as it is heated

Absolute zero is

the coldest temperature possible

Which of the following quantities is NOT required to calculate the amount of heat energy required to heat water from 25°C to 55°C? A) the mass of the water sample B) the initial temperature C) the final temperature D) the specific heat of water E) the heat of vaporization for water

the heat of vaporization of water

A burn from steam at 100°C is expected to be more severe than a burn from boiling water at 100°C because

the steam will give off a large amount of heat as it condenses

How many significant figures are in the number 0.00208? A) six B) two C) three D) four E) five

three

In a gas, the distance between the particles is

very large relative to the size of the molecules

A value of 36 mL is a measure of A) density B) mass C) temperature D) volume E) distance

volume

The amount of space occupied by a substance is its A) mass B) density C) weight D) length E) volume

volume

Raising the temperature of 10.0 g of water from 10.0°C to 20.0°C requires 100.0 cal of energy, while raising the temperature of 10.0 g of aluminum from 10.0°C to 20.0°C requires 22 cal. More calories are required to heat the water because A) water is a liquid and aluminum is a solid at 10.0°C B) ten grams of water occupies a larger volume than 10.0 g of aluminum C) water has a greater potential energy than aluminum D) water has a larger specific heat than aluminum E) 10.0°C is closer to the melting point of water than to the melting point of aluminum.

water has a larger specific heat than aluminum

Which of the following is an example of potential energy? A) chewing food B) water stored in a reservoir C) burning wood D) a fan blade turning E) riding an exercise bike

water stored in a reservoir

The measurement of the gravitational pull on an object is its A) volume B) weight C) mass D) length E) size

weight