Test 10/28/14

Question 1

Why were gaps left in the early periodic table and what is the significance of ekasilicon?

Answer 1

So that they could be filled in for future elements and he predicted ekasilicon to be a new element.

Question 2

Identify 3 ways to number the families of the periodic table.

Answer 2

IUPAC, American, European

Question 3

Describe the atomic radius pattern of the periodic table and explain why.

Answer 3

The electronegativity increases from left to right due to the stronger attraction the atoms obtain.

Question 4

Explain why ions can become smaller or larger.

Answer 4

They become smaller from losing electrons and they become larger from gaining electrons.

Question 5

What happens when hydrocarbons burn in air?

Answer 5

It makes carbon dioxide.

Question 6

What is the most reactive element?

Answer 6

Fluorine

Question 7

What is the least reactive family?

Answer 7

Noble gases

Question 8

What is an alloy?

Answer 8

A mixture of metals.

Question 9

What is the relationship between ionization energy and atomic radius?

Answer 9

The atomic radius depends upon the ionization energy for the electrons.

Question 10

Define malleable.

Answer 10

Able to be hammered and pliable.

Question 11

Define ductile.

Answer 11

Able to be drawn out into a thin wire.

Question 12

What are the properties of metals and nonmetals?

Answer 12

Metals have luster, are good conductors or heat and electricity, and most are solids at room temperature. Nonmetals have no luster, are poor conductors, and they are not malleable or ductile.

Question 13

What is the most abundant element in the Earth’s crust?

Answer 13

Oxygen

Question 14

Who were the 4 guys in the unit?

Answer 14

Dobereiner, Newlands, Mendeleev, Mosely

Question 15

Define ionization energy.

Answer 15

How hard it is to take an atom.

Question 16

Define electronegativity.

Answer 16

An atoms ability to attract electrons in a chemical bond.

Question 17

What is hydrogen?

Answer 17

H- Lightest element, most abundant in universe

Question 18

What is sodium?

Answer 18

Na- Excess can lead to arteriosclerosis, creates hydrogen gas in water

Question 19

What is oxygen?

Answer 19

O- Animal respiration

Question 20

What is neon?

Answer 20

Ne- Found in signs, non-reactive

Question 21

What is fluorine?

Answer 21

F- Found in city water and toothpaste, extremely reactive

Question 22

What is magnesium?

Answer 22

Mg- Makes strong, light alloys

Question 23

What is titanium?

Answer 23

Ti- Light, strong alloy, SR-71

Question 24

What is mercury?

Answer 24

Hg- Found in thermometers and thermostats

Question 25

What is boron?

Answer 25

B- Found in antiseptic, 20 Mule Team Borax Soap

Question 26

What is nitrogen?

Answer 26

N- Found in 77% of air, fertilizer, anesthetic, explosives

Question 27

What is chromium?

Answer 27

Cr- Used in stainless steel and to plate car parts

Question 28

What is arsenic?

Answer 28

As- Found in rat poison

Question 29

What is wolfram (tungsten)?

Answer 29

W- Filament of incandescent light bulbs

Question 30

What is bismuth?

Answer 30

Bi- Found in pepto bismol and fire sprinklers

Question 31

What is chlorine?

Answer 31

Cl- Found in city water, PVC pipe, and bleach

Question 32

What is silver?

Answer 32

Ag- Great conductor, tarnishes with sulfur

Question 33

What is phosphorus?

Answer 33

P- Found in detergents and can pollute water, in fluorescent lights

Question 34

What is uranium?

Answer 34

U- (U-235) Used for fission - power plants and weapons

Question 35

What is aluminum?

Answer 35

Al- Soft drink cans ( also alloys, dyes, and medicines )

Question 36

What is carbon?

Answer 36

C- Pure form is graphite and diamonds ( partial decomposition of wood )

Question 37

What is copper?

Answer 37

Cu- Great conductor of heat and electricity, pennies

Question 38

What things make up steel?

Answer 38

Alloy of carbon and iron

Question 39

What does IUPAC stand for?

Answer 39

International Union of Pure and Applied Chemistry

Question 40

Who made the first periodic table?

Answer 40

Mendeleev

Question 41

What is the strongest element? Wimpiest?

Answer 41

Fluorine, Francium

Question 42

From left to right, what is the order of the families/groups of the periodic table? ( Don't forget the two bottom ones too. )

Answer 42

Alkali metals ( stored under oil ), Alkaline earth metals, Transition metals ( 3- 12 ), Boron Family, Carbon Family, Nitrogen Family, Oxygen Family, Halogens ( salt producers ), Noble Gases ( don't react ), BOTTOM ONES : Lanthanide metals ( rare earth metals ), Actinide metals ( mostly manmade