Exploring Chemistry Chapters 13-15

Question 1

Silicon carbide was discovered while trying to make synthetic

Answer 1

diamond

Question 2

The one discovered first was the the planet Uranus or the element uranium.

Answer 2

the planet Uranus

Question 3

The powder in the expression “keep your powder dry” was

Answer 3

gun powder

Question 4

Cellulose gives plant cells their

Answer 4

strong cell walls

Question 5

Silicon is the ___ .

Answer 5

second most abundant) element in the earth’s crust

Question 6

The one better able to lubricate across extreme temperatures is hydrocarbon motor oil or silicone oil.

Answer 6

silicone oil

Question 7

Guncotton would be described as being ___.

Answer 7

unpredictable and capable of exploding without warning

Question 8

Blasting caps are used

Answer 8

for safe detonation of explosives

Question 9

France’s Emperor Napoleon III had table sets made of

Answer 9

aluminum

Question 10

Abraham Lincoln’s great construction project was to connect California to the East Coast with

Answer 10

a railroad

Question 11

The one that can resist sudden changes in temperature is glass or quartz?

Answer 11

quartz

Question 12

Silicon is an electric

Answer 12

semiconductor

Question 13

The element found in computer chips is

Answer 13

silicone

Question 14

The Star of India is

Answer 14

a diamond

Question 15

Nitrocellulose is a combination of a _______________ compound with cellulose.

Answer 15

nitrogen

Question 16

The six-pound metallic top to the Washington Monument is made of

Answer 16

aluminum

Question 17

Ascanio Sobrero’s reaction to nitroglycerin was to

Answer 17

keep it secret

Question 18

The essential element in explosives is _______________.

Answer 18

nitrogen

Question 19

The foil used to wrap foods is made of

Answer 19

aluminum

Question 20

Stained glass was colored

Answer 20

to hide the fact that glass makers could not make clear glass

Question 21

A gem’s value is due to its

Answer 21

beauty, cost, and rarity

Question 22

Uranium ore is

Answer 22

pitchblende

Question 23

The radioactive element used in smoke detectors is

Answer 23

americium

Question 24

Diatoms have cell walls of

Answer 24

silica