Chemistry Chapter 1&2

Express the following in exponential form: 602,000,000,000

-11 6.02×10 11 6.02×10 9 602×10 11 0.620×10

Convert the following temperatures to the indicated units: 254 K to ∘C 0 ∘C 134 ∘C -19 ∘C 527 ∘C

-19 ∘C

Express the following in exponential form: 0.000365

-4 0.365×10 -4 3.65×10 4 3.65×10 -6 365×10

Calculate the following percentages. 0.50% of 0.060 4 3.0×10 -4 3.0×10 12 0.03

-4 3.0×10

Write the number 8.75×10−4 in standard notation.

-4 -4 8.75×10 = 8.75×10

Express the following in exponential form: 102,000

-5 1.02×10 3 1.02000×10 4 10.20×10 5 1.02×10

Type the number 0.000354 in scientific notation.

0.000354 = -4 3.54×10

Express your answer to the correct number of significant figures 0.00303×101 = ______

0.306

Calculate the densities of the following objects in g/mL. A mass of 86 g and a volume of 95 mL. 0.91 g/mL 1.1 g/mL 0.00091 g/mL 0.11 g/mL

0.91 g/mL

Which of the following is the correct conversion factor to convert mL to L? 1 L = 1000 mL 1000 L = 1 mL 10 L = 1 mL 1 L = 100 mL

1 L = 1000 mL

Identify the number of particles of each element in the following compounds: CaCO3 — chalk 2 calcium atoms, 2 carbon atoms, 6 oxygen atoms 1 calcium atom, 1 carbon atom, 3 oxygen atoms 1 calcium atom, 1 carbon atom, 1 oxygen atom the number of particles cannot be determined

1 calcium atom, 1 carbon atom, 3 oxygen atoms

Round the following number to 2 significant figures: 105,006 Enter your answer using scientific notation. 1.1 x 106 100,000 1.1 x 105 110,000

1.1 x 105

Calculate the densities of the following objects in g/mL. A mass of 1.6 kg and a volume of 1.3 L. 810 g/mL 1.2 g/mL 0.81 g/mL 1200 g/mL

1.2 g/mL

Which of the following conversion factors is correct for converting from grams to kilogram? 1 g = 100 kg 100 g = 1 kg 1 g = 1000 kg 1000 g = 1 kg

1000 g = 1 kg

Convert the following temperatures to the indicated units: 947 K to ∘F 1245 ∘F -281 ∘F 674 ∘F 782 ∘F

1245 ∘F

Type the number 1340000 in scientific notation.

1340000 = 6 1.34×10

Express your answer numerically in milliliters. How many milliliters are in 15.6 dL ?

15.6 dL = 1560 mL

Convert the following temperatures to the indicated units: 84 ∘C to ∘F 250 ∘F 29 ∘F 183 ∘F 357 ∘F

183 ∘F

Express your answer to the correct number of significant figures 19.029−0.00801 = ______

19.021

To which group and period does potassium belong? 4, 1A 5A, 3 2, 5A 1A, 4

1A, 4

What is the number of significant figures in each of the following numbers? 120 M 3 0 4 2

2

What is the number of significant figures in each of the following numbers? 3 0.00067 cm 6 1 5 2

2

Identify the number of particles of each element in the following compounds: H2O2 — hydrogen peroxide 1 hydrogen atom, 1 oxygen atom 2 hydrogen atoms, 1 oxygen atom 2 hydrogen atoms, 2 oxygen atoms the number of particles cannot be determined

2 hydrogen atoms, 2 oxygen atoms

Express your answer to the correct number of significant figures 1.6+23.25 = ______

24.9

Convert the following temperatures to the indicated units: 549 ∘F to ∘C 1051 ∘C 387 ∘C 287 ∘C 100 ∘C

287 ∘C

What is the number of significant figures in each of the following numbers? 0.0580 in 2 3 4 5

3

What is the number of significant figures in each of the following numbers? 190. L 2 0 1 3

3

What is the number of significant figures in each of the following numbers? 35,500 people 5 3 6 2

3

Express the following in exponential form: 5765

3 0.57650×10 -3 5.765×10 3 5.765×10 2 57.650×10

Express the following in exponential form: 2000

3 2.000×10 -3 2×10 4 0.2×10 3 2×10

Type the number 3.14×103 in standard notation.

3 3.14×10 = 3140

Cycling at a pace of 10-12 miles per hour burns 40 calories per mile. How many miles would a cyclist have to ride at this pace to burn 120 calories? 3 miles 0.3 miles 400 miles

3 miles

Express your answer to the correct number of significant figures. 340/96 = ______

3.5

Calculate the percentage by mass of the active ingredient in an antacid tablet that weighs 1.36 g if it contains 520 mg of calcium carbonate. 0.0026% 38.2% 0.38% 0.26%

38.2%

Convert the following temperatures to the indicated units: 236 ∘F to K -35 K 113 K 509 K 386 K

386 K

What is the number of significant figures in each of the following numbers? 20.03 kg 1 2 4 3

4

Calculate the following percentages. 5 7.5% of 4.0 × 10 4 3.0×10 5 3.25×10 5 3.0×10 4 0.30×10

4 3.0×10

How many mL of solution are there in 0.0500 L? 500. mL 50.0 mL 0.50 mL 0.0000500 mL

50.0 mL

Round the following number to 3 significant figures: 546.85 grams. 546.9 546 547 540

547

Express the following in exponential form: 0.00000240

6 2.40×10 -6 2.4×10 6 2.4×10 -6 2.40×10

Rank the numbers from greatest to least. 4 3 5 2 3.45x10 ; 4.56x10 ; 2.34x10 ; 5.67x10 ; 6 1.23x10

6 5 4 1.23x10 ; 2.34x10 ; 3.45x10 ; 3 2 4.56x10 ; 5.67x10

Identify the number of particles of each element in the following compounds: C6H12O6 — glucose 6 carbon atoms, 12 hydrogen atoms, 6 oxygen atoms 6 carbon atoms, 12 hydrogen atoms, 5 oxygen atoms 1 carbon atom, 1 hydrogen atom, 1 oxygen atom the number of particles cannot be determined

6 carbon atoms, 12 hydrogen atoms, 6 oxygen atoms

A doctor prescribes 2 tablets of acetaminophen every 4 hours for a fever. Acetaminophen is available in 325mg tablets. How many milligrams of acetaminophen does the patient take with each dose? 1300 mg 650 mg 325 mg

650 mg

How many O atoms are in the formula unit GaO(NO3)2? 4 5 3 7

7

What is the percent by mass of salt in a mixture that contains 150 g of salt, 1.2 kg of flour and 650 g of sugar? 0.075% 8.1% 7.5% 19%

7.5%

The numerical value for 56,000 ÷ 7.89 is equal to, with the proper number of significant figures: 70.976 71 71.0 70.98

71

Express your answer numerically in grams How many grams are in 729 mg ?

729 mg = 0.729 g

On a spring break road trip, 3 friends drive 480 miles to the beach. If their average speed is 60 miles per hour, how many hours did it take them to reach their destination? 8 hours 0.13 hours 24 hours

8 hours

Calculate the following percentages. 30% of 300 30 100 90 10

90

Which of the following is a homogeneous mixture? Iron filings and sulfur A package of cake mixture Oil and vinegar salad dressing A cup of black coffee

A cup of black coffee

Which of the following substances has the lowest density? A mass of 750 g and a volume of 70 dL A mass of 5 mg and a volume of 25 uL A mass of 25 g and a volume of 20 mL A mass of 1.5 kg and a volume of 1.2 L

A mass of 5 mg and a volume of 25 uL

Which of the following is an example of a heterogeneous mixture? Sugar water Air Vodka Blood

Blood

Which of the following represents a homogeneous mixture? Fog Blood Chocolate chip ice cream Brass (an alloy)

Brass (an alloy)

Which of the following is a nonmetal? Chlorine Aluminum Magnesium Sodium

Chlorine

What is the correct symbol for the element copper Cu Ca Cr Co

Cu

Which of the following statements bests describes a solid? Definite shape but indefinite volume Indefinite shape and volume Definite shape and volume Indefinite shape but definite volume

Definite shape and volume

Air is a pure substance. T/F

False

Steam is a mixture. T/F

False

Which of the following is a pure substance? Sugar Sand Gold Maple syrup

Gold

Which of the following combinations represents only alkali metals? I. Li II. Ba III. Rb IV. Ca I + II I + III II + IV III + IV

I + III

Which of the following combinations represents only halogens? I. O II. He III. I IV. Br III + IV I + II I + IV II + III

III + IV

Which of the following statements bests describes a gas? Definite shape and volume Indefinite shape and volume Indefinite shape but definite volume Definite shape but indefinite volume

Indefinite shape and volume

Which of the following statements bests describes a liquid? Indefinite shape but definite volume Definite shape and volume Indefinite shape and volume Definite shape but indefinite volume

Indefinite shape but definite volume

Which of the following is a metal? Hydrogen Magnesium Chlorine Silicon

Magnesium

Which of these pure substances is an element? CH4 (methane, the primary component of natural gas) O2 C12H22O11 (sucrose, table sugar) NH3 (ammonia, a component of fertilizer)

O2

What is the correct element symbol for palladium Pd Pm Pa P

Pd

Which of the following is a metalloid? Copper Iron Silicon Bromine

Silicon

Which of the following is an element? Ammonia Carbon dioxide Sand Sodium

Sodium

Matter is nearly incompressible in which of these states? Liquid Solid and liquid Gas Solid

Solid and liquid

Which two states of matter have a definite volume? Solid only Liquid and gas Solid and gas Solid and liquid

Solid and liquid

Radon is a noble gas. T/F

True

Selenium is a nonmetal. T/F

True

Convert to mL: On average, an adult's lung volume is 5 L .

V = 5000 mL

A uniform combination of two or more pure substances can be classified as _____. a compound a heterogeneous mixture an element a homogeneous mixture

a homogeneous mixture

Based on the organization of the periodic table, periods _____. contain A and B designations are the vertical columns contain elements with similar chemical behaviors are the horizontal rows

are the horizontal rows

Classify each of the following as an element or a compound: Ca(OH) 2

compound

Classify each of the following as an element or a compound: KI

compound

Classify each of the following as an element or compound: potassium chloride, a table salt substitute

compound

Classify each of the following as an element or compound: sodium hypochlorite, found in bleach element/compound

compound

Classify each of the following as an element or a compound: C

element

Classify each of the following as an element or a compound: Fe

element

Classify each of the following as an element or compound: aluminum, used in soft drink cans and foil element/compound

element

Classify each of the following as an element or compound: hydrogen, fuel of the sun element/compound

element

a bowl of vegetable soup homogeneous/heterogeneous

heterogeneous mixture

a dinner salad homogeneous/heterogeneous

heterogeneous mixture

apple pie homogeneous/heterogeneous

heterogeneous mixture

banana waffles homogeneous/heterogeneous

heterogeneous mixture

a glass of mineral water homogeneous/heterogeneous

homogeneous mixture

an unopened can of coke homogeneous/heterogeneous

homogeneous mixture

gasoline homogeneous/heterogeneous

homogeneous mixture

mouthwash homogeneous/heterogeneous

homogeneous mixture

Density is defined as the comparative ratio of a substance's _____. mass to length length to mass mass to volume volume to mass

mass to volume

All the different kinds of substances that make up all of the material of the universe are known collectively as: matter elements electrolytes compounds

matter

concrete pure substance/mixture

mixture

ice cream pure substance/mixture

mixture

salt water pure substance/mixture

mixture

A horizontal row in the periodic table is called a ________. block group period column

period

baking soda pure substance/mixture

pure substance

copper pure substance/mixture

pure substance

propane gas pure substance/mixture

pure substance