Chemistry Background Knowledge

Both the surface of the earth and the interior of most organisms is approximately ____% water.

Basic atomic structure includes

Two or more atoms can come together by sharing or exchanging electrons in a chemical ____.

On the periodic table of the elements, the atomic number of an element tells the number of ___.

The ________ refers to the fact that most elements want to have 8 outer (valence) electrons.

On a scale of 1-4, (1=“master” & 4=“whuddat?”), how would you rate your chemistry knowledge?

If electrons are exchanged (given OR received), this is a(n) _______ bond.

One of few substances to exist as a liquid, solid, and gas in the temps we have on earth is __.

To symbolize a molecule, we use a ________ like CH₄, CO₂, O₂, or C₆H₁₂O_6.

Neutrons have a _________ charge.

Electrons have a _________ charge.

In its natural state, an individual atom of an element has a net __________ charge.

The following diagram is a model of a(n)

This overall neutral charge of an atom is due to the fact that ____.

Each of the following are examples of

If electrons are shared, this is a(n) _______ bond.

When two or more atoms come together, the result is called a(n) ________.

The term ________ refers to molecules that have positive + or negative - charges on each end.  

Protons have a _________ charge.

With regards to reacting with other elements, the most important part of an atom is the _____.