Properties of Select Elements

Katherine Stanley

6 Elements: Zinc, Cobalt, Silicon, Yttrium, Calcium, and Potassium

Least To Greatest

Density from Least to Greatest: Potassium, Calcium, Silicon, Yttrium, Zinc, Cobalt

Lowest to Highest Melting Point: Potassium, Zinc, Calcium, Silicon, Cobalt, Yttrium

Zinc (Zn)

Characteristics of Zinc:

Density- 7.134 g/cm^-3        Melting Point/Freezing Point- 419.527 C

Everyday Uses:

Used in many products of cosmetics, rubber, and paint.  

Used to prevent rusting of other metals.

An Interesting Fact:

Zinc is essential for living things. Some foods have above average levels of zinc, including herring, beef, lamb, sunflower seeds and cheese.

Cobalt (Co)

A picture of Cobalt

Characteristics:

Density- 8.86 g/cm^-3          Melting Point/Freezing Point- 1495 C

Everyday Uses:

Is used to make magnets.

Cobalt salts have been used for centuries to produce brilliant blue colors in paint, porcelain, glass, pottery and enamels.

An Interesting Fact:

Radioactive cobalt-60 is used to treat cancer.

Silicon (Si)

A picture of Silicon

Characteristics of Silicon:

Density- 2.3296 g/cm^-3        Melting point/Freezing point- 1414 C

Everyday Uses:

Most is used to make alloys including aluminium-silicon and iron silicon.

Used extensively as a semiconductor in solid-state devices in the computer and microelectronics industries.

An Interesting Fact:

Silicon is essential to plant life but its use in animal cells is uncertain. Silicon is also non-toxic.

Yttrium (Y)

A picture of Yttrium

Characteristics of Yttrium:

Density- 4.47 g/cm^-3        Melting Point/Freezing point- 1522 C

Everyday Uses:

It increases the strength of aluminium and magnesium alloys.

It can be used to treat some cancers, such as liver cancer.

An Interesting Fact:

Yttrium oxide is added to the glass used to make camera lenses to make them heat and shock resistant.

Calcium (Ca)

A picture of Calcium

Characteristics of Calcium:

Density- 1.54 g/cm^-3            Melting Point/Freezing Point- 842 C

Everyday Uses:

used as a reducing agent in preparing other metals such as thorium and uranium.

used directly as a building stone and indirectly for cement.

An Interesting Fact:

The average human contains about 1 kilogram of calcium.

Potassium (K)

Characteristics of Potassium:

Density- 0.89 g/cm^-3           Melting Point/Freezing Point- 63.5 C

Everyday Uses:

Potassium carbonate is used in the manufacture of glass.

Potassium hydroxide is used to make detergent and liquid soap.

A Interesting Fact:

Potassium chloride is used in pharmaceuticals and saline drips.

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