Quarter 2 Chemistry Exam Review

Name one of the states of matter water can be found in:

Covalent bonds are:

• weaker than ionic

• share electrons

• always use hydrogen

• none of these

The orbital notation for an atom is shown. Choose the statement that represents the element and the reason for the answer.

• The element is Boron because the atom contains 1 electron in the 3p sublevel.

• The element is Lithium because the atom contains 3 electrons.

• The element is Aluminum because the atom contains 1 electron in the 3p sublevel.

• The element is Ne because the valence shell is completely filled.

The atom that contains only one electron in the highest occupied energy sublevel.

• S

• Ca

• Ga

• Br

The smallest part of an element is:

• Nucleus

• Atom

• Electron

• Chloroplast

How many valence electrons does this Nitrogen atom have?

• 7

• 5

• 15

• 2

Ernest Rutherford fired positively charged alpha particles at gold foil. A few of the alpha particles were deflected slightly or bounced off. From this data scientists concluded

• The nucleus is very small and has no charge.

• The nucleus is very diffuse and the protons and neutrons are very far apart.

• The nucleus is very small and is positively charged.

• The nucleus contains electrons which attracted the positively charged alpha particles.

Catalysts (BLANK) chemical reactions.

• slow down

• speed up

• stop

• reverse

To start a reaction you need:

• Light

• Power

• Fire

• Activation Energy

What is a "Valence Shell"

• The first electron shell

• Something you would find on the beach

• The outermost electron shell

• Any full electron shell