Chemistry Manual 2012-2013 - Edison State College

Blake Schmidt - Unit 5 Page 29
U5 EP2
Unit 5: Example Problems 2
Matter & Periodic Table
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The idea of arranging the elements in the periodic table according to their chemical and
physical properties is attributed to _______________________.
Mendeleev left spaces in his periodic table and predicted the existence of three elements and
their______________________.
The discovery of what elements added a new column to Mendeleev's periodic table?
a. noble gases b. transition metals c. halogens d. alkaline -earth metals
What are the elements with atomic numbers from 58 to 71 called?
Argon, krypton, and xenon are __________________________.
The periodic law allows some properties of an element to be predicted based on its
a. position in periodic table b. symbol c. mass d. color
Potassium and bromine belong to ____________________.
In which group does hydrogen belong? Explain.
The most reactive group of nonmetals is _______________________.
Elements in group 1, aka ____________________, are (more/less) reactive than elements in
group 2, aka ______________________.
What type of mixture has components in a uniform distribution?
Which of the following is a homogeneous mixture?
a. water b. sugar water c. whole wheat bread d. sugar
All of the following are heterogeneous mixtures except
a. whole wheat bread b. granite c. tap water d. oil -water mixture
Identify the separation techniques pictured below. Which technique would be useful to
separate a mixture of sand, salt and water? Of salt and water? Elements of water?