Chemistry: Metals

Which actinides are made naturally on earth?

actinium, thorium, protactinium, and uranium. All other actinides were created in laboratories.

What type of metals are good conductors?

alkaline earth metals & transition metals

Give three examples of metals that can be made into magnets?

iron, cobalt, and nickel

Quick fact 2

lanthanides are difficult to separate from one another because they all share very similar properties.

Two most common alkaline earth metals?

magnesium and calcium

Most metals are solids at room temperature, which metals is not?

mercury

On the periodic table where are the metals?

All of the elements in blue-tinted squares to the left of the zigzag line.

alkali metals

An element in Group 1 of the periodic table

alkaline earth metals

An element in Group 2 of the periodic table.

How do Alkali metals react with other elements?

-1 electron

How do Alkaline earth metals react?

-2 electrons

Metal

A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.

particle accelerator

A machine that moves atomic nuclei at higher and higher speeds until they crash into one another, sometimes forming heavier elements.

ductile

A term used to describe a material that can be pulled out into a long wire.

malleable

A term used to describe material that can be pounded into shapes.

Where are lanthanides placed on the periodic table?

Below the main part of the periodic table there are two rows, the first row are lanthanides.

Give one element that is malleable and ductile?

Copper

As you move further down the periodic table, the reactivity of metals tend to what?

Decrease as you move from left to right

Reactive: G1 metals > or < G2 metals

G1 > G2

Describe lanthanides.

Lanthanides are soft, malleable, shiny metals with high conductivity

Quick fact 1

Most metals are good conductors. In addition, a few metals are magnetic

transition metals

One of the elements in Groups 3 through 12 of the periodic table.

What are the 4 main physical properties of metals?

Shininess, malleability, ductility, and conductivity.

Conductivity

The ability of an object to transfer heat or electricity to another object.

reactivity

The ease and speed with which an element combines, or reacts, with other elements and compounds.

corrosion

The gradual wearing away of a metal element due to a chemical reaction.

What is an alloy?

a mixture of a metal with at least one other element, usually another metal

How are alkali metals & Alkaline earth metals found in nature? Why are they found like that?

They are found as compounds because they are very reactive.

What are lanthanides made of?

They are mixed with more common metals to make alloys.

What is used to produce energy in nuclear power plants?

Uranium(actinide)

Three most important alkali metals?

sodium, lithium, and potassium

Elements with atomic numbers higher than 92 are sometimes described as ______ ?

synthetic elements because they are not found naturally on Earth.