Deck 1: Chemistry Basics - Matter and Measurement

Question 1

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

A)Sugar water
B)Blood
C)Air
D)Vodka

Answer 1

Blood

Question 2

Which of the following is a pure substance?

A)Sugar
B)Sand
C)Gold
D)Maple syrup

Answer 2

Gold

Question 3

Which of the following represents a homogeneous mixture?

A)Brass (an alloy)
B)Chocolate chip ice cream
C)Blood
D)Fog

Answer 3

Brass (an alloy)

Question 4

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

A)elements
B)compounds
C)matter
D)electrolytes

Question 5

Which of the following is an element?

A)Carbon dioxide
B)Sodium
C)Ammonia
D)Sand

Question 6

Which of the following is a homogeneous mixture?

A)A cup of black coffee
B)A package of cake mixture
C)Iron filings and sulfur
D)Oil and vinegar salad dressing

Question 7

What is the correct element symbol for palladium?

A)P
B)Pa
C)Pd
D)Pm

Question 8

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

A)I + II
B)III + IV
C)I + IIII
D)II + IV

Question 9

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

A)I + II
B)III + IV
C)II + III
D)I + IV

Question 10

Which of the following is a metal?

A)Chlorine
B)Silicon
C)Magnesium
D)Hydrogen

Question 11

Which of the following is a metal?

A)Boron
B)Aluminium
C)Germanium
D)Phosphorus

Question 12

Which of the following is a nonmetal?

A)Chlorine
B)Magnesium
C)Sodium
D)Aluminum

Question 13

Which of the following is a metalloid?

A)Bromine
B)Silicon
C)Iron
D)Copper

Question 14

Which of the following is a nonmetal?

A)Tellurium
B)Germanium
C)Antimony
D)Selenium

Question 15

Which of the following combinations represents compounds rather than elements?
I. O₃
II. CCl₄
III. S₈
IV. H₂O

A)I + II
B)III + IV
C)I + III
D)II + IV

Question 16

How many O atoms are in the formula unit GaO(NO₃)₂?

A)3
B)4
C)5
D)7

Question 17

How many H atoms are in the molecule C₆H₃(C₃H₇)₂(C₂H₅)?

A)10
B)15
C)22
D)27

Question 18

Which of the following is a mass unit?

A)cg
B)mL
C)dm
D)yd

Question 19

Which of the following is the correct unit for length?

A)cg
B)mL
C)dm
D)gal

Question 20

Which of the following conversion factors is correct for converting from grams to kilogram?

A)1 g = 1000 kg
B)1000 g = 1 kg
C)100 g = 1 kg
D)1 g = 100 kg

Question 21

Which of the following is the correct conversion factor to convert mL to L?

A)1000 L = 1 mL
B)10 L = 1 mL
C)1 L = 1000 mL
D)1 L = 100 mL

Question 22

How many mL of solution are there in 0.0500 L?

A)50.0 mL
B)0)50 mL
C)500. mL
D)0)0000500 mL

Question 23

Convert 152 miles into kilometers, using proper significant figures, given that 1 mile = 1.609 km.

A)94.4 km
B)94 km
C)244.57 km
D)245 km

Question 24

How many significant figures are there in the following number: 53,000 pounds?

A)1
B)2
C)3
D)4

Question 25

How many significant figures are there in the following number: 0.00458 grams?

A)1
B)2
C)3
D)4

Question 26

Round the following number to 3 significant figures: 546.85 grams

A)546
B)547
C)546.9
D)540

Question 27

Round the following number to 2 significant figures: 105,006

A)100,000
B)110,000
C)1)1 × 10⁵
D)1)1 × 10⁶

Question 28

Write the numerical value for 56,000 ÷ 7.89 with the correct number of significant figures:

A)70.976
B)71
C)70.98
D)71.0

Question 29

47.462 + 22.53 + 0.11443

A)70.10643
B)70.106
C)70.11
D)70.1

Question 30

Which of these samples has the smallest mass?

A)160 ?g
B)0)016 g
C)0)00016 mg
D)0)000000016 kg

Question 31

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?

A)0)075%
B)7)5%
C)8)1%
D)19%

Question 32

Which of the following statements bests describes a liquid?

A)Definite shape and volume
B)Indefinite shape and volume
C)Indefinite shape but definite volume
D)Definite shape but indefinite volume

Question 33

Which of the following statements bests describes a solid?

A)Definite shape and volume
B)Indefinite shape and volume
C)Indefinite shape but definite volume
D)Definite shape but indefinite volume

Question 34

Which of the following statements bests describes a gas?

A)Definite shape and volume
B)Indefinite shape and volume
C)Indefinite shape but definite volume
D)Definite shape but indefinite volume

Question 35

Matter is nearly incompressible in which of these states?

A)Gas
B)Liquid
C)Solid
D)Solid and liquid

Question 36

Identify the correct ordering of attractions among particles in the three states of matter.

A)Solid < liquid < gas
B)Solid > liquid > gas
C)Gas < solid < liquid
D)Solid < gas < liquid

Question 37

Which of the following substances has the lowest density?

A)A mass of 1.5 kg and a volume of 1.2 L
B)A mass of 25 g and a volume of 20 mL
C)A mass of 750 g and a volume of 70 dL
D)A mass of 5 mg and a volume of 25 uL

Question 38

Using Table 1.4 in the text, determine which of these substances would show the largest temperature increase, if equal masses of each were heated with the same quantity of energy.

A)Air
B)Gold
C)Iron
D)Paraffin wax

Question 39

What is the total dose required for a 140 lb patient if the amount required is 28 mg/kg bodyweight?

A)1)8 mg
B)1)8 g
C)3)9 mg
D)3)9 g

Question 40

Which of the following is not a physical change?

A)Boiling water
B)Dissolving kool-aid
C)Frying an egg
D)Liquefying oxygen

Question 41

Which of the following is a chemical reaction?

A)Rusting of iron
B)Slicing a ham
C)Liquefying oxygen
D)Melting ice

Question 42

What is the coefficient of HClO₄ when the following equation is balanced with smallest whole numbers?
Cl₂O₇ + H₂O ? HClO₄

A)1
B)2
C)3
D)4

Question 43

What is the coefficient for O₂ when this equation is balanced with the lowest whole number coefficients?
C₂H₆ + O₂ ? CO₂ + H₂O

A)3
B)4
C)6
D)7

Question 44

What is the coefficient for O₂ when this equation is balanced with the lowest whole number coefficients?
C₃H₇OH + O₂ ? CO₂ + H₂O

A)4
B)5
C)9
D)10

Question 45

What is the total of all the coefficients when the following equation is balanced with the lowest whole number coefficients?
N₂H₄ + H₂O₂ ? N₂ + H₂O

A)4
B)8
C)10
D)12

Question 46

Steam is a mixture.

Question 47

Selenium is a nonmetal.

Question 48

A group is a vertical column on the periodic table.

Question 49

Radon is a noble gas.

Question 50

Antimony is a metal.

Question 51

Iron is an example of a micronutrient.

Question 52

1 m = 10^-6?m

Question 53

Kinetic energy is stored energy.

Question 54

A Calorie is equivalent to 1000 calories.

Question 55

Classify each of the following as a pure substance or a mixture; if a mixture, indicate whether it is homogeneous or heterogeneous.

A)Concrete
B)Iodine crystals
C)Gasoline
D)White chocolate macadamia nut cookies
E)Vegetable soup
F)Aluminum metal

Question 56

Identify the number of particles of each element in the following compounds:

A)H₂O₂ - hydrogen peroxide
B)C₆H₁₂O₆ - glucose
C)CaCO₃ - chalk

Question 57

Write the total number of atoms in each of the following formulas.

A)CuSO₄.5H₂O
B)(NH₄)₃PO₄
C)C₆H₄(CH₃)(C₂H₅)?
D)AlO(NO₃)₂
E)Fe₃(PO₄)₂

Question 58

A vertical column in the periodic table is called a ________.

Question 59

What is the number of significant figures in each of the following numbers?

A)20.03 kg ________
B)190. L ________
C)120 M ________
D)0.00067 cm³ ________
E)0.0580 in ________
F)35,500 people ________
D)0.00067 cm³ ________

Question 60

Express the following numbers in scientific notation.

A)109,000
B)0.00065
C)61,000,000,000
D)26
E)0.00000720

Question 61

Express the following in exponential form:

A)5765
B)0.000365
C)102,000
D)0.00000240
E)602,000,000,000
F)2000

Question 62

Rewrite the following as ordinary numbers:

A)6.75 × 10⁵
B)4.66 × 10^-4
C)2.020 × 10³
D)1.11 × 10^-2
E)23 × 10^-5

Question 63

Perform the following mathematical operations. Give the answer with the proper number of significant figures.

A)(2.45 × 10⁵)(5.6 × 10⁴)=
B)(7.5 × 10⁷)÷ (8.566 × 10⁵)=
C)(3.45 × 10^-9)+ (0.326 × 10^-9)=

Question 64

Calculate the following percentages.

A)30% of 300
B)7.5% of 4.0 × 10⁵
C)0.50% of 0.060

Question 65

Perform the following conversions within the metric system.

A)55 cm = ________ m
B)9535 m = ________ km
C)87 dg = ________ g
D)0.00376 L = ________ mL

Question 66

Perform the following conversions.

A)56 cm = ________ in
B)2.0 ft² = ________ cm²
C)19.8 qt = ________ ^L
D)78.2 lb = ________ ^kg

Question 67

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.

Question 68

Convert the following temperatures to the indicated units:

A)549 °F to °C
B)254 K to °C
C)947 K to °F
D)84°C to °F
E)236°F to K

Question 69

Express the following quantities in joules.

A)74.6 cal
B)1.45 × 10⁴ kcal
C)296 Cal

Question 70

Express the following quantities in calories (cal).

A)98.3 J
B)236 × kJ
C)127 kCal

Question 71

Calculate the densities of the following objects. in g/mL

A)A mass of 86 g and a volume of 95 mL.
B)A mass of 1.6 kg and a volume of 1.3 L
C)A mass of 17 kg and a volume of 850 mL
D)A mass of 870 g and a volume of 25 dL
E)A mass of 45 mg and a volume of 45 μL

Question 72

Calculate the mass of sugar in 250 g of a mixture that contains 35 mass percent sugar.

Question 73

Calculate the total amount of drug required for a patient that weighs 160 lb if the dose is 25 mg/kg bodyweight.

Question 74

Calculate the mass percent of fat in a candy bar that contains 12 g fat, 26 g carbohydrate, 6 g protein and 4 g of other material.

Question 75

Insert the coefficients to balance the following equations.

A)________VCl₃ +________Mg → 2 V + 3 MgCl₂
B)4 HI + ________MnO₂ →________MnI₂ + ________H₂O + I₂
C)________AlCl₃ +________KOH →________Al(OH)₃ + ________KCl
D)________C₄H₈ +________O₂ → ________CO + ________H₂O