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Ionic And Covalent Compounds Chamberlain University Biological Chemistry (CHEM120-62398)

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John Marsh
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Ionic And Covalent Compounds Lab 3 Lab Instructions
WEEK 3, LAB 3 OUT OF 9
University
Chamberlain University

Course
Introduction to Organic and Biological Chemistry (CHEM120-62398)

CHEM120: Week 2 lab
Name:
Exploration 2: Ionic compounds
Ionic compounds are hard, brittle and crystalline in nature. Ionic compounds have high melting points
compared to covalent compounds. Many Ionic compounds are water soluble and conduct electricity. It is
possible to identify a compound as an ionic compound or a covalent compound by observing properties
such as melting point, solubility and ability to conduct electricity. These properties are due to the nature
of the ionic bond.
Ionic compounds are made between oppositely charged ions- a cation and an anion. The cation may be a
positively charged polyatomic ion or a metal ion. The anion may be a negatively charged polyatomic ion
or a nonmetal ion. In this activity, we will learn about naming ionic compounds and deriving their
chemical formulas.
Part 2A: Cations and their names
Metals form cations by donating electrons in their valence shell to satisfy the octet rule. The name of a
cation is the same as name of the element. Complete Table 1 by providing names of cations, their
chemical symbols and charges.
Table 1:
Number
Name of
Element
Chemical symbol
of the element
Name of the cation
Chemical symbol and
charge of the cation
1
Lithium
Li
Lithium ion
Li+
2
Calcium
Ca
Calcium ion
Ca2+
3
Sodium
Na
Sodium ion
Na+
4
Aluminum
Al
Aluminum ion
Al3+
5
Barium
Ba
Barium ion
Ba2+
6
Rubidium
Rb
Part 2B: Anions and their Names
Non-metals form anions by accepting electrons to complete their valence shell and satisfy the octet rule.
The name of an anion is never the same as the name of the element, but rather is named by adding the
. Complete Table 2 by providing names of anions, their chemical symbols and charges.
Table 2:
Number
Name of
Element
Chemical symbol
of the element
Name of the anion
Chemical symbol and
charge of the anion
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Ionic And Covalent Compounds Chamberlain University Biological Chemistry (CHEM120-62398)

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