Structure and bonding

Properties of elements and compounds

Alloys

The mole concept and chemical calculations

MYP Chemistry Alloys Notes

What Happens to the Structure When We Make an Alloy?

Pure Metals: Neat Layers that Slide

In a pure metal:

All atoms are the same size.
They are arranged in regular, closely packed layers (a metallic lattice).
Positive metal ions are surrounded by a “sea” of delocalised electrons that hold the lattice together.

Because the atoms are all identical and neatly arranged, the layers can slide easily over each other when a force is applied.

That’s why many pure metals (like pure copper or pure iron) are relatively soft and malleable.

Alloys: Distorted Layers

An alloy is a mixture of a metal with:

another metal, or
a non-metal (often a small atom like carbon).

When we add these new atoms into the metallic lattice:

The added atoms are usually a different size from the main metal atoms (either larger or smaller).
This distorts the regular layers.
The layers can no longer slide past each other as easily → the metal becomes harder and stronger.

Hint

Key idea: Alloying ≈ “messing up” the perfect layers, so they can’t slip.

Types of Alloys

Substitutional Alloys

The added atoms are similar in size to the host metal atoms.

They replace some of the original metal atoms in the lattice.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

MYP Chemistry Alloys Notes

What Happens to the Structure When We Make an Alloy?

Pure Metals: Neat Layers that Slide

Alloys: Distorted Layers

Types of Alloys

Substitutional Alloys

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

What Happens to the Structure When We Make an Alloy?

Pure Metals: Neat Layers that Slide

Alloys: Distorted Layers

Types of Alloys

Substitutional Alloys

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Periodic table5 subtopics

Matter5 subtopics

Types of chemical reaction18 subtopics

International Union of Pure and Applied Chemistry (IUPAC)4 subtopics

Pure and impure substances2 subtopics

The atmosphere2 subtopics

Bonding4 subtopics

MYP Chemistry Alloys Notes

Periodic table5 subtopics

Matter5 subtopics

Types of chemical reaction18 subtopics

International Union of Pure and Applied Chemistry (IUPAC)4 subtopics

Pure and impure substances2 subtopics

The atmosphere2 subtopics

Bonding4 subtopics

What Happens to the Structure When We Make an Alloy?

Pure Metals: Neat Layers that Slide

Alloys: Distorted Layers

Types of Alloys

Substitutional Alloys

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

What Happens to the Structure When We Make an Alloy?

Pure Metals: Neat Layers that Slide

Alloys: Distorted Layers

Types of Alloys

Substitutional Alloys

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account