3rd Quarter Chemistry

Question 0

Charcoal is ________

Answer 0

Wood that has been heated without oxygen

Question 1

Ancient people hammered soft, pure iron from ______ into useful tools

Answer 1

Meteorites

Question 2

True or false. The only purpose of carbon in smelting iron from its ore is so it will burn and supply heat

Answer 2

False. Carbon from charcoal frees iron from oxygens grip by combining with the oxygen.

Question 3

Which form of iron is the purest?

Answer 3

Wrought iron

Question 4

Cast iron is ______

Answer 4

Hard and brittle and can shatter if struck

Question 5

Steel is quenched by _______

Answer 5

Heating it white hot and thrusting it into cold water

Question 6

Cast iron, steel,and wrought iron differ only in the amount of _______ they contain.

Answer 6

Carbon

Question 7

Rusting is a _________ oxidation

Answer 7

Slow

Question 8

True or false. A tin can is made mostly of tin.

Answer 8

False. Mostly made of steel

Question 9

What metal looks more like silver?

Answer 9

Pewter

Question 10

True or false. Metals maintain their properties regardless of temperature

Answer 10

False. Tin becomes very week in the cold

Question 11

What metal is more expensive, tin or aluminum?

Answer 11

Tin

Question 12

Action

Ancient people had iron tools

Answer 12

Reaction

Meteorites fell to earth contains pure iron

Question 13

Action

Iron resists efforts to remove it from its ore

Answer 13

Reaction

In a blast furnace, carbon in charcoal combined with oxygen in iron ore to free the pure metal

Question 14

Action

The Scott expedition to the South Pole perished in a blizzard when their fuel cans were found empty.

Answer 14

Reaction

In extremely cold weather cans sealed with tin leaked their precious heating fuel

Question 15

Action

Gold was the most prizes of the ancient metals

Answer 15

Reaction gold had a beautiful luster, did not tarnish, and could be formed into designs

Question 16

Action

Gold was too soft for many purposes

Answer 16

Reaction. Goldsmiths made gold harder by mixing copper with it

Question 17

People who breathed mercury fumes became confused

Answer 17

Reaction. Mercury was a poisonous metal that affected a persons nervous system

Question 18

Gold, silver, and _______ are known as the coinage metals

Answer 18

Copper

Question 19

The first metal mentioned in both the Old and New Testament is _______

Answer 19

Gold

Question 20

True or false

A 14 carat gold ring is pure gold

Answer 20

False. Pure gold is 24 carats

Question 21

True or false. Gold resists being beaten into thin layers

Answer 21

False. Gold is the most malleable of all metals which means it can be flattened very easily

Question 22

True or false. Pure silver, unlike gold, is hard enough to resist daily wear

Answer 22

False. Silver is soft and mixed with copper to resist daily wear

Question 23

Bronze and brass are both alloys that contain ______

Answer 23

Copper

Question 24

Ancient people made musical instruments of ____

Answer 24

A copper alloy

Question 25

The Statue of Liberty has a skin of _______

Answer 25

Copper

Question 26

The seven ancient metals are gold, silver, copper, iron, tin, lead and ______

Answer 26

Mercury

Question 27

Another name for mercury is _______

Answer 27

Quicksilver

Question 28

True or false. A block of lead would float in a pool of mercury

Answer 28

True. Mercury is the heaviest metal, all lighter metals can float in it

Question 29

The metal used in thermometers and barometers is _______

Answer 29

Mercury

Question 30

The seven ancient planets (wanderers) are sun, moon, Venus, Jupiter, Mars, Saturn and ______

Answer 30

Mercury

Question 31

The apostle Paul was compared to

Answer 31

Mercury, known as Hermes

Question 32

Carbon and sulfur are A) metals; B) non-metals

Answer 32

Non-metals

Question 33

The element known as brimstone is A) sulfur; B) bismuth

Answer 33

Sulfur

Question 34

True or False. Sulfur is one if the ingredients in gun powder

Answer 34

True

Question 35

Goodyear discovered vulcanized rubber when he A) added carbon to sulfur B) heated sulfur with raw rubber C) put rubber under intense pressure; D) treated rubber with sulfuric acid

Answer 35

B) heated sulfur with raw rubber

Question 36

True or False. Goodyear made a vast fortune for his invention of vulcanized rubber

Answer 36

False. Everyone stole his idea

Question 37

The single most important compound of sulfur is __________ acid

Answer 37

Sulfuric

Question 38

Acid rain is due to (A. Carbon; B. Sulfur) being spewed into the atmosphere.

Answer 38

B. Sulphur

Question 39

The element that charcoal, coal, graphite, and diamond have in common is ________.

Answer 39

Carbon

Question 40

The one that is slick and can be used as a dry lubricant is (A. Graphite; B. Diamond)

Answer 40

Graphite

Question 41

True or False, synthetic diamonds are fake diamonds and have none of the properties of natural ones

Answer 41

False, they are identical to natural ones

Question 42

True or False. The primary goal of alchemists was to make gold from cheap metals

Answer 42

True

Question 43

Science in Europe (A. Came to a standstill; B, made great strides) during the Middle Aged

Answer 43

A. Came to s standstill

Question 44

The Middle Ages are also known as the ______ ages

Answer 44

Dark

Question 45

True or False. The schools Robert Boyle attended taught from the latest books by Galileo and Copernicus

Answer 45

False. His schools only used ancient books

Question 46

The invisible college was (A. A gathering of alchemists B) a gathering of experimental scientists C) devoted to a study of books by Ptolemy and Aristotle D) a school for poor students

Answer 46

B) a gathering of experimental scientists

Question 47

An element (A. Can B. Cannot) be separated into simpler substances by chemical means

Answer 47

B cannot

Question 48

The Royal Society was formed to A) buy scientific equipment B) communicate new ideas rapidly; C) help write better science textbooks D) teach the King about science

Answer 48

B. Communicate new ideas rapidly

Question 49

Henry Cavendish would be described as A) shy or B) forward

Answer 49

A) shy

Question 50

Cavendish released the gas hydrogen by exposing metals to A) ammonia B) hydrochloric acid C) carbon dioxide D) intense heat and pressure

Answer 50

B) hydrochloric acid

Question 51

The name hydrogen means A) colorless B) lacking odor C) lighter than air D) water generator

Answer 51

D) Water generator

Question 52

Electricity breaks water molecules into oxygen and A) hydrogen B) nitrogen

Answer 52

A) hydrogen

Question 53

If a mixture of hydrogen and oxygen are exposed to a flame A) a violent explosion results B) electricity is generated C) the fire goes out D) the mixture becomes dry

Answer 53

A) a violent explosion results

Question 54

True or False. Hydrogen is an abundant element on earth

Answer 54

True

Question 55

The reason scientists give Joseph Priestly credit for discovering carbon dioxide is because Priestly (A. Had friends who were scientists B. Had political power C. Kept his discoveries secret until the right moment D. Published his thorough studies promptly

Answer 55

D. Published his thorough studies promptly

Question 56

The gas that Priestly released by heating a mercury compound was (A. Carbon dioxide; B) hydrogen; C) nitrogen ; D) oxygen

Answer 56

D) oxygen

Question 57

Oxygen makes up about (A. 1/5; B. 3/4; C.all ) of the atmosphere

Answer 57

A. 1/5

Question 58

The chemical activity of oxygen is (A. High; B. Low)

Answer 58

A. High

Question 59

The one that supports combustion is (A. Nitrogen B. Oxygen)

Answer 59

B oxygen

Question 60

True or False. An oxygen-acetylene cutting torch can burn under water

Answer 60

True

Question 61

Rusting of metals is an example of (A. Slow; B. Fast) oxidation

Answer 61

Slow

Question 62

The element in the air that prevents fires from burning too quickly is (A. Oxygen B. Nitrogen)

Answer 62

B nitrogen

Question 63

Give the chemical symbol _____ hydrogen _______ carbon ______ nitrogen ______ oxygen _____ chlorine

Answer 63

H. C. N. O. Cl.

Question 64

State the chemical formula. ______ water. ______ carbon dioxide ________ hydrochloric acid

Answer 64

H20. CO2. HCl