Atomic Theory Review: Part II

1. What is the subatomic particle that determines the identity of the element?

A. B. C.

11%

0%

89%A. ProtonsB. ElectronsC. neutrons

2. The periodic table is arranged according to:

A. B. C. D.

21%

0%

53%

26%

A. Atomic symbolB. Atomic massC. Atomic numberD. Boiling point

3. True of False: Elements on the periodic table increase according to their masses.

A. B.

53%

47%

A. TrueB. False

No! Can you find on the periodic table where they are not?

How is the Periodic Table is Arranged?

Examples of where the atomic masses do not increase.

1. 90-91, 27-28, 83-84,52-53

How is the Periodic table arranged?A. Atomic symbolB. Atomic massC. Atomic numberD. Boiling point

Atom

ic sy

mbol

Atom

ic mas

s

Atom

ic number

Boiling p

oint

0% 0%0%0%

25

Metals vs. Non-Metals

Metals

Non-metals

Man made elements and Rare Earth metals

Stair steps

Metal, Non-metals and Metalloids

Most elements are metals. 88 elements to the left of the stairstep line are metals or metal-like elements.

Nonmetals are found to the right of the stairstep line. Their characteristics are opposite those of metals.

Metalloids are elements on both sides of the zigzag line. They have properties of both metals and nonmetals.

Metalloids on the Periodic TableFA

MIL

IES

/ G

RO

UP

SPeriods/ Rows

Metalloids

Families on the Periodic Table

Elements in the Earth’s ATMOSPHERE

Element AmountNitrogen 78.1 %

Oxygen 20.9 %

Argon 0.96 %

Elements in the Earth’s OCEANS

Element AmountOxygen 85.84 %

Hydrogen 10.82 %

Chlorine 1.94 %

Sodium 1.08 %

Magnesium 0.1292 %

Elements in the Earth’s CRUST

Element AmountOxygen 46.1 %

Silicon 28.2 %

Aluminum 8.23 %

Iron 5.63 %

Calcium 4.15 %

So where do the names come from?

Iron (Fe)………….……Ferrum

Sodium (Na)….. …….Natrium

Gold (Au)……………Aurum

Silver (Ag)………….Argentum

Potassium (K)………… Kalium

Copper (Cu) ………….Cuprum

Mercury (Hg) ……Hydragyrum

Antimony (Sb)………… Stibium

Tin(Sn)….………… Stannum

Lead(Pb)

……………..Plumbum

Tungsten(W)………….Wolfran

These abbreviations are for there LATIN names of the elements.