Classifications on the periodic table lesson

Periodic Table Arrangement
Unit 5
Food Chemistry

Understanding the Periodic Table

The periodic table can help us
predict how atoms will combine
together to make compounds.

It can also help us predict the
properties of elements.

Unit 5 Learning Targets

Overall goal: Predict properties of elements based on their
location in the periodic table.

- Identify groups and periods on the periodic table
- Identify metals, nonmetals, and metalloids and their properties
- Determine the number of valence electrons for each element
- Draw dot diagrams for elements
- Identify trends on the periodic table: valence electrons,

Write the notes in BLUE on your note packet as you go through the slides.

Periodic Table Organization

Periods = rows (across)
- # of periods = 7
- Going across a period, the number of protons goes up

Groups = columns (up and down)
- # of groups = 18
- Elements in a group have similar properties

Lanthanide and Actinide Series

● Located under the periodic table, but they actually

belong in periods 6 and 7

● Lanthanides - period 6
● Actinides - period 7

Lanthanides

Actinides

Expanded periodic table

Why are lanthanides and actinides on the bottom?
So it's easier to fit the periodic table on piece of paper

LANTHANIDES

ACTINIDES

Multiple Choice

What element is in period 2 and group 13?

• lithium, Li

• beryllium, Be

• boron, B

• helium, He

Multiple Choice

What element is in period 5 and group 11?

• Copper, Cu

• silver, Ag

• Iron, Fe

• Vanadium, V

Multiple Choice

What element is in group 17 and period 3?

• Oxygen
• Chlorine
• Sulfur
• Fluorine

Element properties

Malleable - can be hammered into sheets, bendable

Element properties

Ductile - can be formed into wire

Element properties

Conductor - allows heat and electricity to pass through

Semiconductor = can allow electricity to pass through under certain conditions

Element properties

Brittle - will break into pieces when hit with a hammer

1. Metals

2. Metalloids

3. Nonmetals

Elements are organized into 3 classifications.

Label your periodic table (use arrows for metals and nonmetals, lightly shade metalloids)

1. Left side of stairs:

metals

2. Right side of stairs:

nonmetals

3. Touching the stair:

metalloids (B, Si,
Ge, As, Sb, Te, Po?, At?)

Not Aluminum!

METALS

Nonmetals

Metalloids

Multiple Choice

Most of the elements on the periodic table are

• metalloids

• metals

• nonmetals

• gases

Metal Properties:

- solid (except for Hg)

- shiny
- ductile
- malleable
- good conductors

Metals

Nonmetals

Nonmetal properties:
● Many gases, some solid, Br is liquid
● POOR conductors
● Brittle
● Dull (not shiny)

Metalloids

- Look like metals but behave like nonmetals

- Usually shiny
- Somewhat brittle
- Used as semiconductors

Multiple Choice

What is calcium, Ca?

• Metal

• Nonmetal

• Metalloid

Multiple Choice

Is Bromine (Br) malleable?

• Yes

• No

2. Is Bromine malleable?

No, it is a nonmetal which are not malleable.
Also, it is a liquid!

Multiple Choice

Would it make sense to make a frying pan out of sulfur (S)?

• Yes

• No

3. Would it make sense to make a frying pan out of
sulfur? No, it is a nonmetal so it’s a poor conductor of heat.

Group 1: Alkali metals

Group2: Alkaline earth
metals

Groups 3-12:
Transition metals

Group 17: Halogens

Group 18: Noble gases

IMPORTANT GROUPS TO KNOW -
(also called Families)

Alkali Metals- Group 1

• Does not include Hydrogen

• Very reactive metals, always combined with other elements

(like in salt).

• Soft enough to cut with a butter knife

Alkaline Earth Metals- Group 2

• Reactive, but less reactive than alkali metals

• Called alkaline earth metals because the

form “alkaline” or basic solutions (pH>7)

Found in fireworks, batteries, alloys. Calcium in your
bones. Magnesium in chlorophyll.

Multiple Choice

Are alkaline earth metals malleable and ductile?

• yes, because they are metals

• no

Transition Metals

• Elements in groups 3-12

• Less reactive harder metals

• Includes metals used in

jewelry and construction.

• Metals used “as metal.”

Halogens - Group 17

• Very reactive, diatomic (ie. Cl2, F2,),

nonmetals

• Always found combined with other

element in nature

• Most reactive halogens are at the top.

1

Multiple Choice

Are halogens metals or nonmetals?

• Metals

• Nonmetals

The Noble Gases - Group 18

• VERY unreactive because

they have a full outer
energy level

• Used in lighted “neon” signs

Hotspot

Click on the alkali metal is in period 7.

Hotspot

Click on alkaline earth metal in period 5

Hotspot

Click on a metalloid in group 13.

Hotspot

Click on a transition metal in period 5.

Multiple Choice

What type of element is Chlorine, Cl?

• actinide

• alkaline earth metal

• noble gas

• halogen

Match

Match the following

• Halogens

• Alkaline earth metals

• Alkali metals

• Noble Gases

Group 17

Group 2

Group 1

Group 18

• Group 17

• Group 2

• Group 1

• Group 18

Multiple Choice

Which group and period are the actinides located in?

• Group 2 and

  Period 6

• Group 5 and

  Period 3

• Group 4 and

  Period 8

• Group 3 and

  Period 7

Multiple Choice

What group/family is Neon (Ne) in?

• Halogens

• Noble gases

• Alkali metals

• Transition metal

Group 1: Alkali metals -

Group2: Alkaline earth
metals

Groups 3-12:
Transition metals

Group 17: Halogens -

Group 18: Noble gases

Label or color code your periodic table!!!
You should memorize these!

Do the understanding check

​on page 3

You're done!!

put the notes in your folder