Name______Period ______Chemistry Test #1

Part 1- Matching Terms: Please match the following terms with their definitions by writing the correct letter in the space provided (2 points each)

1)_____ ProtonA. The size of an ion

2)_____NeutronB. The amount of energy it takes to remove an electron from an atom

3)_____ElectronC. The electrons in the outer shell of an atom

4)_____ Atomic NumberD. The size of an atom

5)_____Atomic MassE. Neutral particle in the nucleus

6)_____AtomF. A positive or negatively charged particle

7)_____IonG. The mass of an atom which includes the protons and neutrons

8)_____Ionization EnergyH. Equal to the number of protons in an atom

9)_____ElectronegativityI. The smallest part of an element that maintains its chemical properties

10)_____Atomic radiiJ. Negatively charged particle

11)_____Ionic radiiK.Indicates the relative ability of its atoms to attract electrons in a bond

12)_____valence electronsL. Positively charged particle in the nucleus

Part II- True/False (2 points each). Please mark the following statements with a T if true, and an F if false. If false, please correct the statement.

13)_____ An atom contains most of its mass in the nucleus

14) _____ The last thing you should do before you leave the laboratory is wash your hands.

15) _____The number of protons added to the number of neutrons=atomic number.

16) _____ Nonmetals are located on the left hand side of the periodic table.

17) _____ Fluorine is the most electronegative element on the periodic table.

18) _____ Eating and drinking is strictly prohibited in the laboratory.

19) _____Halogens are the most reactive to water.

20) _____ Noble gases are inert; they do not readily react to other elements.

Part III-The Atom Chart: Please fill in the chart with the correct information (1 point each).

Element name / Element Symbol / Atomic Number / Protons / Neutrons / Atomic Mass / Electrons
Pb / 82 / 207 / 82
Neon / 10 / 10 / 11 / 10
Cs / 55 / 78
Silver ion / 47 / 107 / 46
Copper (II) ion / Cu 2+ / 29 / 35 / 64
S2- / 16 / 16 / 18

Part IV-Calculating Average Atomic Masses: Calculate the average atomic mass using the information provided (5 points each).

21) An element has two isotopes: one of mass 63 u, the other with a mass of 65 u. If the relative abundance of the isotopes is 69.1 % and 30.9 %, respectively, find the atomic mass of the element. Show your work and give your answer to 3 significant figures.

HONORS 22) If the relative abundance of a neon isotope was 5.7%, and the rest was on Ne-20, what was the mass number of the minor isotope.

Part V- The Periodic Table: Provide the given information. (1 point each).

23) Name the group name to which each of the following elements belong:

Sodium ______

Calcium ______

Iron ______

Iodine ______

Neon ______

24) Using the elements listed, determine which element meets the following criteria:

FClRaK

Highest ionization energy ______

Lowest electronegativity ______

Largest atomic radii ______

Smallest ionic radii______

Most reactive to water ______

Part VI-Dot Diagrams: Complete the following dot diagrams (5 points each).

25) Oxygen

26) Nitrogen

27) Carbon