Seymour's Chemistry Basics Review

Misc.

100

A neutral Arsenic atom contains 33 protons, 33 electrons, and 42 neutrons. Calculate the mass number.

75.

200

The outermost section of an atom where the electrons involved in bonds can be found.

Valence shell.

300

This element has 4 layers of electrons, a charge of -1, and a valence shell containing 7 electrons.

Bromine.

400

An atom of this element has six layers of electrons and a full valence shell. The valence shell is not an s orbital.

Radon.

500

The heaviest components of the atom and their location.

Protons and neutrons, which are located in the nucleus (the center).

Atoms

100

Number of atoms of each element in C₆H₁₂O₆

6 carbon, 12 hydrogen, 6 oxygen.

200

Number of atoms of each element in Na₂CO₃

2 Sodium, 1 carbon, 3 oxygen

300

Number of atoms of each element in Fe₂(CO₃)₃

2 iron, 3 carbon, 9 oxygen

400

Number of atoms of each element in CH₃COONH₄

2 carbon, 7 hydrogen, 1 nitrogen, 2 oxygen

500

Number of atoms of each element in C₆H₂(NO₂)₃CH₃

7 carbon, 3 nitrogen, 6 oxygen, 5 hydrogen.

Charges

100

Charge of chlorine.

-1

200

Charge of Calcium.

+2

300

Charge of Carbon.

+/-4

400

Charges of all atoms in NaOH.

Sodium +1, Hydrogen +1, Oxygen -2

500

Charges of all atoms in H₂SO₄

Hydrogen +1, Oxygen -2, Sulfur +6

Groups

100

Very soft metals, highly reactive to water, have only one electron in their valence shell.

Alkali metals

200

Slightly soft metals, react with water (but not violently), oxidize easily, and have 2 electrons in their valence shell.

Alkaline Earth Metals

300

Colorful, highly toxic, have 7 electrons in their valence shell, highly electronegative, chronic electron thieves, and used in chemical weapons during WWI.

Halogens

400

Colorless, odorless, tasteless. Very inert and do not react to their surroundings. Have a full valence shell of 8 and thus have a charge of zero.

Noble gases.

500

Have six valence electrons, usually have a charge of -2, can come in various different forms, and generally have high reactivity and electronegativities. Several heavier elements in this group can have strange oxidation states due to the d-orbitals they possess.

Chalcogens

Equations

100

Balance this equation:

2H₂O₂ -> H₂O + O₂

2H₂O₂ -> 2H₂O + O₂

200

Balance this equation:

C₆H₁₂O_{6 ->} C₂H₅OH+CO₂

C₆H₁₂O_{6 ->} 2C₂H₅OH+2CO₂

300

Balance this equation:

CO₂+H₂O -> C₆H₁₂O₆ + O₂

6CO₂+6H₂O -> C₆H₁₂O₆ + 6O₂

400

C3H8 +  O2 ->  CO2 +  H2O

C3H8 + 5 O2 -> 3 CO2 + 4 H2O

500

Balance this:

CH4 + NH3 + O2 → HCN + H2O

2 CH4 + 2 NH3 + 3 O2 → 2 HCN + 6 H2O