Unit 3 ReviewUnit 3 ReviewPeriodic Periodic TrendsTrends

How many valence How many valence electrons does aluminum electrons does aluminum

have?have?

one tw

o three

four

0% 0%

100%

0%

1.1. oneone2.2. twotwo3.3. threethree4.4. fourfour

What period does sodium (Na) belong What period does sodium (Na) belong to?to?

1 2 3

None o

f the a

bove

10% 5%

85%

0%

1.1. 112.2. 223.3. 334.4. None of the aboveNone of the above

Tell me 3 or 4 things about each element Tell me 3 or 4 things about each element based on its position on the periodic based on its position on the periodic table:table: #31 Gallium#31 Gallium

3 valence electrons in the 43 valence electrons in the 4thth energy level energy level metalmetal

#52 Tellurium#52 Tellurium 6 valence electrons in the 56 valence electrons in the 5thth energy level energy level metalloidmetalloid

# 2 Helium# 2 Helium 2 valence electrons in the 12 valence electrons in the 1stst energy level energy level NonmetalNonmetal Noble gasNoble gas

Which is the most important subatomic Which is the most important subatomic particle when determining an particle when determining an

element’s chemical properties?element’s chemical properties?

electr

ons

protons

neutro

ns

All are

equal

47%

11%16%

26%

1.1. electronselectrons2.2. protonsprotons3.3. neutronsneutrons4.4. All are equalAll are equal

Draw the Lewis Dot Draw the Lewis Dot structures for the following structures for the following

elements:elements:BeBe P P OO

AlAl Br BrVolunteers for Board Work?Volunteers for Board Work?

In order to fill its outermost In order to fill its outermost energy level, fluorine will most energy level, fluorine will most

likely:likely:

gain el

ectro

ns

lose el

ectro

ns

gain pro

tons

lose neu

trons

61%

0%0%

39%

1.1. gain electronsgain electrons2.2. lose electronslose electrons3.3. gain protonsgain protons4.4. lose neutronslose neutrons

What is the relationship between What is the relationship between valence electrons and position on the valence electrons and position on the

periodic table?periodic table?

simila

r peri

od

simila

r group

simila

r atomic

numbe

r

simila

r mas

s number

10%0%0%

90%1.1. similar periodsimilar period2.2. similar groupsimilar group3.3. similar atomic similar atomic

numbernumber4.4. similar mass similar mass

numbernumber

How many empty spaces in the How many empty spaces in the outermost energy level does sulfur outermost energy level does sulfur

have?have?

one tw

o six

seve

n

6%0%

17%

78%1.1. oneone2.2. twotwo3.3. sixsix4.4. sevenseven

What do beryllium and What do beryllium and calcium have in common?calcium have in common?

same g

roup

same n

umber of v

ale...

all of th

e abov

e

26%

63%

11%

1.1. same groupsame group2.2. same number of same number of

valence electronsvalence electrons3.3. all of the aboveall of the above

How many neutrons are How many neutrons are present in an atom of present in an atom of

carbon-14?carbon-14?

6 12 8 14

35%

6%

59%

0%

1.1. 662.2. 12123.3. 884.4. 1414

How many electrons does a How many electrons does a MgMg2+2+ ion have? ion have?

12 10 14 2

5%0%

26%

68%1.1. 12122.2. 10103.3. 14144.4. 22

What is the charge on a What is the charge on a chlorine ion that has 18 chlorine ion that has 18

electrons?electrons?

1 +

1 -

2 + 0

11%0%

5%

84%1.1. 1 +1 +2.2. 1 -1 -3.3. 2 +2 +4.4. 00

Family Name of group 17?Family Name of group 17?

1 2 3 4 5

0% 0%

88%

12%

0%

1.1. AlkaliAlkali2.2. Transition Transition

MetalsMetals3.3. Group II - MetalsGroup II - Metals4.4. Noble GasesNoble Gases5.5. HalogensHalogens

This family has 8 valence This family has 8 valence electrons?electrons?

1 2 3 4 5

0%

21%

11%

63%

5%

1.1. AlkaliAlkali2.2. Transition Transition

MetalsMetals3.3. Group II - MetalsGroup II - Metals4.4. Noble GasesNoble Gases5.5. HalogensHalogens

The element silicon is an The element silicon is an example of a …example of a …

1 2 3

0%

84%

16%

1.1. MetalMetal2.2. NonmetalNonmetal3.3. MetalloidMetalloid

These are found on the far These are found on the far right side of the periodic right side of the periodic

table…table…

1 2 3

6%11%

83%1.1. MetalsMetals2.2. NonmetalsNonmetals3.3. MetalloidsMetalloids

Rank your use of the class Rank your use of the class website. website.

1 2 3 4 5

0%

16% 16%

37%

32%1.1. I don’t have access to the I don’t have access to the

internet at home. internet at home. 2.2. I don’t know how to get to I don’t know how to get to

the website. the website. 3.3. I have access to the website I have access to the website

but don’t find it helpfulbut don’t find it helpful4.4. I use it sometimes.I use it sometimes.5.5. I use the website everyday. I use the website everyday.