The Excellent Eight : There are eight elements that make up the most common mine

Question

The Excellent Eight:

There are eight elements that make up the most common minerals in the Earth's crust. List those eight elements and come up with a mnemonic(example) to help you remember them. Creativity and humor is encouraged. The elements can be used in any order.

Types of Bonding:

In the lecture notes you learned about the five main types of bonding:

ionic

covalent

metallic

hydrogen

van der Waals

Pick any two (2) of these bonds and prepare some notes for your classmates. This is for someone that doesn't know about bonding, so your notes should be clear.  In your own words, provide the following information:

a brief description of the bond (rewrite the definition in your own words),

what makes this bond unique from the other bonds, and

give two examples of a molecular bond (for instance, sodium chloride (NaCl) is an example of ionic bonding).

Explanation / Answer

The abundant elements in earth crust are

Oxygen example oxides like corundum

Silica eg quartz, Aluminium eg feldspar, iron hematite, Calcium eg calcite, Sodium eg albite , Potassium eg orthoclase, magnesium dolomite.

a bond is an attraction between two atoms which is essenttial for the formation of chemical compounds.

an ionic bond is a bond in which one or more electrons of an atom are transfered to another atoms.

a covalent bond is one in which the sharing of pair of electrons between two atoms occur.

exmaples of ionic bond are sodium hydroxide NaOH, clacium chloride Cacl2 and Nacl rock salt

examples of covalent bond are hydrogen chloride Hcl , water H2O

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