(10-11) F3 Chemistry Individual Project WorkIonic & Covalent compounds

Name: Esther WongClass: 3CClass no: (35)

MgOMagnesium Oxide

(Electron diagram)

Boiling point & Melting point High Boiling point : 3600 &℃ Melting point : 2827 ± 30℃

Color & Physical state White, tasteless powder (solid)

Density 3.58 g/ cm3

Solubility in water Very slightly ( 0.086 g/ L )

Electrical conductivity It is a good electrical insulator

Molecular Weight 40.31 g/mol

Physical properties of MgO

Reactivity towards Water and Acid Water: it will form Magnesium Hydroxide

Acid: gives Magnesium Nitrate and water.

Storage & Laboratory preparation Store in cool and dry places. Keep away from strong acids.

Don’t touch it with bare skin.

Make sure all the touching surfaces are completely dry.

Wash thoroughly after handing it.

Chemical properties of MgO

It is basic Both oxidising and reducing.

Cause eyes irritation.

Cause respiratory tract (呼吸道 ) irritation.

Inhalation (吸入 ) of the fumes of MgO may cause fever.

The bright light produced will emit harmful intensity of UV light.

Potential hazards

Eyes Gently lift the eyelids & flush continuously with water.

Skin (bare skin) Flush with PLENTY of water, remove the contaminated clothing.

Ingestion DON’T induce vomiting or drink water!

Inhalation Remove to fresh air environment

First Aid Measures

Medicine

Firework

Cosmetics

Coating Fertilizer(肥料 )

Abrasives (磨具 )

Desiccant (乾燥劑 )

Cement (水泥 )

Different states :

For interest

The End~

List of the resources :http://en.wikipedia.org/wiki/Magnesium_oxide

http://www.magnesiaspecialties.com/students.htm

http://www.ehow.com/about_4709013_common-uses-magnesium-oxide.html

http://www.magnesiaspecialties.com/students-mining.htm

http://kidshealth.org/parent/medications/magnesium_oxide.html