CHM 2045C Module One Sample Exam

M-1 Part C: Element Classification 5 points

Using the periodic chart provided, in the blanks below write the classification of the elements listed:

1. ¹²C₆ ______________ 4. ¹H₁ _________________

2. ³⁹K₁₉ ______________ 5. ⁴He₂ _________________

3. ¹¹B₅ ______________

M-1 Part K: Vocabulary 5 points

In the blank below, write word(s) that best fit the description:

______________1. A pure stances that can not be broken down any further by a

chemical reaction.

______________2. A pure substance that can be broken down further by a chemical

reaction.

______________3. The study of matter and the changes matter undergoes.

______________4. Two or more substances mixed together uniformly through out of

which a solution is an example.

______________5. Elements which properties in between the metals and nonmetals

and under one condition they act as metal, while under other

conditions may act as a nonmetal.

______________6. Smallest particle or unit of an element.

______________7. Smallest particle or unit of a compound.

______________8. Stored energy that matter possesses owing to its position or

composition.

______________9. A symbolic representation of a compound indicating the number of

atoms of each element.

______________10. The Energy associated with the mass and velocity of a particle or

the energy of motion of a particle.

Alternate Answer: Write a definition below of one word in the vocabulary list not referenced above and you may leave one of the words blank: