Laredo Community College
Science Department
CHEM 1411 Practice Exam Chapter 2 Newton 1
Name: TEST #
Part I. Multiple Choice (3 pts each)
Circle the letter of the BEST answer on the test here. When you have finished, use a #2 pencil
(provided) and completely darken the letter on the Scantron form which corresponds to your choice.
If you make a mistake, erase the wrong answer completely. Each question is worth 3 points.
1. Which statement concerning the structure of the atom is correct?
(A) The mass of the protons and neutrons is negligible, even though they occupy most of the
volume of the atom.
(B) The mass of the electrons is negligible, even though they occupy most of the volume of
the atom.
(C) Electrons have most of the mass and occupy most of the volume of the atom.
(D) Electrons have most of the mass but occupy very little of the volume of the atom.
(E) Protons and neutrons have most of the mass and they occupy most of the volume of the
atom.
2. Which statement best describes relationships in a modern periodic table?
(A) Elements are always arranged in order of increasing atomic numbers.
(B) Non-metallic properties increase as one progresses from top to bottom in a family of
elements.
(C) Non-metallic properties tend to predominate for elements at the lower left portion of the
table.
(D) The fourteen elements in the lanthanide series form a new independent period.
(E) Each transition element is placed in the column of the main group element that it most
closely resembles.
3. Acetic acid is a molecule with two carbon atoms, four hydrogen atoms, and two oxygen
atoms. The empirical formula of acetic acid is .
(A) H2C4O2(B) (C2H4O)2(C) CH2O
(D) C2H4O2(E) HOAc
