Periodic Table Trends

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Periodic Table Trends

Metals

What we use metals for?

Bridges, building, or ships

Metals are in solid state in Room temperature

Some metals react with air and corride

High Denisty

Malleable

Ductile

Lustrous

Nobel gases

Noble gases that are reactive to water and oxygen

What we use Nobel Gases for?

Lamps and neon lights

Non-Flammable

Extreme stable

Low chemical reactivity

Can Conduct electricity

Colorless

Odorless

Discussion Questions

Which group would you expect to be more reactive: Group 16, Group 17, or Group 18 elements? Explain your reasoning.

Group 17 because the halogen elements have seven valence electrons, they only require one extra electron to form a full group. This characteristic makes them more reactive than other non-metal groups

Would you expect Al to be more reactive than Mg. Justify your answer.

No i would not be surprised If aluminum was more reactive than Magnesium. Magnesium is more reactive the aluminum

How would chemical reactivity affect how one might extract sodium and potassium metals?

They would use different method to extract the metals. Metals more reactive than carbon, such as aluminium, are extracted by electrolysis(Electric Current)

Transition Metals

why are the transition metals so reactive to water and oxygen

Transition metals do not react as quickly with water or oxygen so do not corrode as quickly.

What we use Transition Metals for?

Tools and Vehicles

Great strength

High densities

High hardness

They`re shiny when freshly cut

They can conduct electricity in Liquid state

They can conduct Electricity in solid state

Alkali Metal

why are the alkali metals so reactive to water and oxygen

Alkali metals are also known to react violently and explosively with water. This is because enough heat is given off during the Combustion reaction to ignite the H2(g) (Hydrogen).

the melting point of the alkali metals decreases down the group. This is because as the ions get larger the distance between the bonding electrons and the positive nucleus gets larger and reduces the overall attraction between the two

What we use Alkali metal for?

Table salt, atomic clocks and etc.

readily lose their outermost electron to form cations with a charge of +1

Highly Reactive at standard pressure

Highly reactive at standard temperature

Silvery

Non - metals

What we use non - metals for?

Fertilizers

Poor conductors of heat

More reactive with metal more than non metals

Not reactive with air in room temperature room

Not lustrous

Brittle solids

Not sonorous

Metalloids

What we use metalloids for?

Electronics and etc

Electron Affinity

electronegativity

High ionization

Good conductors

Brittle

THIS GOES FOR ALL THE ELEMENTS

The melting points decrease down the group because the metallic bonds are weaker for the larger elements. The atoms in a metal are held together by the attraction between the nuclei and the delocalized electrons.

Halogens

What we use Halogens?

Dishes and etc.

Denser as you go down the table

High in toxicity

Very reactive

Physical properties

Low melting point

Density of liquid at specific temperature

Colour - Pale yellow gas

Alkaline earth Metals

Describe the relationship observed for radius of the atom and melting points as you move around the periodic table

When going down the periodic table the elements with a higher atomic number it will be easier

What we use Alkaline Earth Mteals for?

Key ingredient to make fireworks.

Chemical Properties

low boiling points

low melting points

low densities

Physical Properties

Soft

Silvery - white

Shiny