Chemistry Level 4 Mod C
September 9, 2015
In the article "Just a Theory", Dan Kruger suggests that the human brain has not evolved
to understand scientific concepts. Although he makes an accurate statement pointing out the lack
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How the Earth was Made
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5. How old do we feel the earth is"
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lThe Five Types of Chemical Reactions
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Zinc Metal and
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Where do most of the divergent boundaries on earth occur?
What is a mid-ocean ridge?
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What happens at a mid-ocean ridge?
Information: Naming ions
To write an ion, you write the symbol of'the atom and put the cha
Consider the following examples: Al, 02', Mg2+
9 Positive and negative ipns are named differently. Positive ions retain the same name as the
parent atom. F
Multiple Choice ( 4 points each) V
Identh the choice that best completes the statement or answers the question. (5
:D l. Without the strong nuclear force, the nuclei of atoms would
a. collapse. c. double in size. J
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our Bohr diagrams of atoms an ions. The two diagrams on the left are at
the two on the right are ions.
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1. Write the equation r th re ' .
action of sod - . .
Q Q) _b C V rum and chlorine (d1atom1c)to form sodium chlon'da
chloride and sodium nitride.
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