Chemistry Test 7

Front 1

Polymers of silicon, oxygen, and carbon are called?

Back 1

Silicones

Front 2

Mineral compounds containing metals and silicon-oxygen groups are called?

Back 2

Silicates

Front 3

Milk of magnesia, a suspension of ____, is used as a stomach antacid and laxative.

Back 3

Magnesium Hydroxide

Front 4

Epsom salts, the hydrate of _____, is used in hot baths to reduce swelling.

Back 4

Magnesium Carbonate

Front 5

An expensive metal widely used in automotive catalytic converters, spark plugs, and surgical tools is?

Back 5

Platinum

Front 6

The nonmetal that exists in rhombic, monoclinic, and plastic forms depending on the temperature is?

Back 6

Sulfur

Front 7

A lightweight metal extracted from bauxite and widely used in aircraft, spacecraft, and beverage cans is what?

Back 7

Aluminum

Front 8

Most of the element ______ produced annually is used for acid production.

Back 8

Sulfur

Front 9

Steel is an alloy of iron and a small percentage of ______.

Back 9

Carbon

Front 10

Gold and silver are typically extracted from low-grade ores using the ______.

Back 10

Cyanide Process

Front 11

Laughing gas, a compound used as an anesthetic in minor dental surgery, is?

Back 11

Nitrous Oxide

Front 12

The element _____ is typically extracted from petroleum and natural gas using the Claus process.

Back 12

Sulfur

Front 13

Brass and bronze are both alloys of?

Back 13

Copper

Front 14

The process by which certain microorganisms convert atomospheric nitrogen to a form that can be used by plants is?

Back 14

Nitrogen Fixation

Front 15

The blast furnace is used to extract _____ from its ore.

Back 15

Iron

Front 16

The hormone thyroxine, produced by the thyroid gland, contains?

Back 16

Iodine

Front 17

Deposits inside boilers, hot-water heaters, and teapots are often due to _______?

Back 17

CaCO3

Front 18

Most helium is extracted from?

Back 18

Natural Gas

Front 19

What group of elements are found in nature only as free, uncombined elements?

Back 19

Noble Gases

Front 20

What is the third most abundant element in the earth's crust?

Back 20

Aluminum

Front 21

Which class of nonmetals is the most reactive?

Back 21

Halogens

Front 22

What compound used in fertilizer manufacturing is produced by the Haber process?

Back 22

Ammonia (NH3)

Front 23

What alkaline earth metal is an essential component of bone and teeth?

Back 23

Calcium

Front 24

Includes fluorine, chlorine, bromine, and iodine.

Back 24

Halogens

Front 25

Includes platinum, silver, and gold.

Back 25

Prescious Metals

Front 26

Includes boron, silicon, and germanium.

Back 26

Semimetals

Front 27

Includes helium, argon, krypton, and xenon.

Back 27

Nobles Gases

Front 28

Includes beryllium, magnesium, calcium, and barium

Back 28

Alkaline Earth Metals

Front 29

Includes palladium, rhodium, iridium, and osmium.

Back 29

Platinum-group metals

Front 30

Includes lithium, sodium, potassium, and cesium.

Back 30

Alkali Metals

Front 31

Hematite is the most common ore of the element _____.

Back 31

Iron

Front 32

Borax is one of the most common compounds of the element _______.

Back 32

Boron

Front 33

The Hall-Héroult process is used to produce _______.

Back 33

Aluminum

Front 34

Two or more forms of the same element that differ in their properties but exist in the same physical state are called ______.

Back 34

Allotropes

Front 35

Lye and caustic soda are common names for _____.

Back 35

Sodium Hydroxide

Front 36

Water containing high concentrations of calcium, magnesium, and iron(II) ions is called ______ water.

Back 36

Hard

Front 37

Malachite, cuprite, and chalcopyrite are ores of _______.

Back 37

Copper

Front 38

Ozone is an allotrope of the element _____.

Back 38

Oxygen

Front 39

What naturally produced noble gas can diffuse into home basements and is associated with an increased risk of cancer?

Back 39

Radon

Front 40

What is the most reactive of all elements?

Back 40

Fluorine

Front 41

What element is produced industrially by steam reforming of natural gas?

Back 41

Hydrogen

Front 42

What semiconductor is most commonly used to make computer chips?

Back 42

Silicon

Front 43

Which of the following statements best explains why sulfuric acid can be used to measure the health of the United States' economy?

Back 43

Sulfuric acid is used extensively in industry

Front 44

Which of the following elements is not an important nutrient contained in commercial fertilizers?

Back 44

Oxygen

Front 45

What compound is used as a contrast agent for x-rays of the gastrointestinal tract?

Back 45

Barium Sulfate

Front 46

What dense metal is used in car batteries, weights, radiation shielding, and small-arms ammunition?

Back 46

Lead

Front 47

Which of the following is not a method of hardening steel?

Back 47

Annealing

Front 48

What is the cheapest and most widely used metal?

Back 48

Iron

Front 49

What metal is used to make the windows in x-ray tubes?

Back 49

Beryllium

Front 50

What is the primary component of window glass?

Back 50

Silicates

Front 51

Which of the following physical properties is not characteristic of metals?
A)Poor Electrical Conductivity
B)Ductility
C)Malleablility
D)Luster

Back 51

Luster

Front 52

What very dense metal is used in industrial counterweights, high-density armor, and nuclear fuels?

Back 52

Uranium

Front 53

What is the most malleable and ductile metal known?

Back 53

Gold

Front 54

Which of the following nonmetals does not have multiple allotropes at room temperature?
A)Oxygen
B)Hydrogen
C)Phosphorus
D)Sulfur

Back 54

Hydrogen

Front 55

Which of the following is not an ion of oxygen?
A)Oxide Ion
B)Peroxide Ion
C)Ozone Ion
D)Superoxide Ion

Back 55

Ozone Ion

Front 56

What element exists as an unstable white allotrope and more stable red allotrope?

Back 56

Phosphorus

Front 57

An alloy of mercury with another metal is called a(n) _________.

Back 57

Amalgam

Front 58

The form of iron produced by direct iron reduction is _______________.

Back 58

Sponge Iron

Front 59

The active ingredient in bleach is the _______ anion.

Back 59

Hyperchlorite

Front 60

Salts of phosphoric acid are called ____________.

Back 60

Phosphates

Front 61

The science of extracting metals from their naturally occurring materials and preparing them for use is called __________.

Back 61

Metallurgy

Front 62

The addition of hydrogen to double or triple bonds in known as ______________.

Back 62

Hydrogenation

Front 63

The process occurring in plants that continually replenishes oxygen in the atmosphere is ___________.

Back 63

Photosynthesis

Front 64

The second most abundant element in the earth's crust.

Back 64

Silicon

Front 65

Used in refrigerants and as an anticavity dental treatment.

Back 65

Fluorine

Front 66

Used in bleaches, PVC plastic, medicines, pesticides, and water treatment.

Back 66

Chlorine

Front 67

Used in deep-sea diving mixtures and as a nonflammable lifting gas in airships and high-altitude balloons.

Back 67

Helium

Front 68

Used in ammonia, artificial fertilizers, and explosive compounds.

Back 68

Nitrogen

Front 69

The most abundant element in the universe.

Back 69

Hydrogen

Front 70

Isotopes are protium, deuterium, and tritium

Back 70

Hydrogen

Front 71

Briefly describe the two processes commonly used to refine steel.
Determine which of these processes would be more useful in a country where electricity is expensive; support your conclusion based on the descpriptions you have given.

Back 71

Talk about basic oxygen process, electric-arc process, which would be more useful.