Element Name-Calcium
Atomic Number-20
o
o
o
o
o
Element Symbol-Ca
Atomic weight-40.078
Calcium phase at room temperature is a solid.
Its melting point is 842 °C and 1548 °F.
Its boiling point is 1484 °C and 2703 °F.
Calcium’s density is 1.55 g·cm−3.
The color of calcium is silvery white.
o The texture of calcium is malleable, ductile, relatively soft metal with
face-centered, cubic crystalline structure.
o The hardness is 1.75 Mohs.
o This element has malleability because it is a good conductor.
o A good ductility of this element is teeth.
o The conductivity of calcium is (300 K) 201 W·m−1·K−1
o Calcium is very flammable.
o Toxicity in calcium is not common because the gastrointestinal tract
normally limits the amount of calcium absorbed.
A man named Sir Humphry Davy has been reported to discover
this famous element.
Calcium was known as early as the first century when the
Ancient Romans prepared lime as calcium oxide. It was not
isolated until 1808 in England when Sir Humphry Davy
electrolyzed a mixture of lime and mercuric oxide.
Calcium is essential for the normal growth and maintenance of
bones and teeth, and calcium requirements must be met
throughout life.
It was discovered in 1808.
Common use is milk to build strong bones. Davy was trying to
isolate calcium; when he heard that Berzelius and Pontin
prepared calcium amalgam by electrolyzing lime in mercury, he
tried it himself. He worked with electrolysis throughout his life
and also discovered/isolated sodium, potassium, magnesium,
boron and barium.
Calcium appears as natural gypsum and calcium sulphate
dehydrate naturally.
Calcium in mined.
Calcium arsenate
(Ca3(AsO4)2)
Calcium carbide (CaC2)
Calcium chloride (CaCl2)
Calcium cyclamate
(Ca(C6H11NHSO4)2)
Calcium gluconate
(Ca(C6H11O7)2)
Calcium hypochlorite
(Ca(OCl)2)
Calcium permanganate
(Ca(MnO4)2)
Calcium phosphate
(Ca3(PO4)2)
Calcium phosphide (Ca3P2)
Calcium stearate
(Ca(C18H35O2)2
Calcium sulfate
(CaSO4·2H2O)
Calcium tungstate
(CaWO4)
There are no environmental concerns right now concerning this
element. No they are not causing pollution.
1. About 4.2% of the earth's crust is composed of calcium.
2. Calcium is an important component of a healthy diet.
3. Dairy products, such as milk and cheese, are a well-known
source of calcium.
4. Calcium is the fifth most abundant element by mass in the
human body.
5. Calcium compounds are used in making lime, bricks,
cement, glass, paint, paper, sugar, glazes, as well as for
many other uses.
Your name: Cayla Boland and Kirsten Murphy
Your class period 3