Name
Class:
Chemistry
Homework 1 – Worksheet 1
Sections 7.1 & 7.2
Date: Jan. 29th. 2017
Done by: Mr. Imad Darwiche
Quarter 2
1. Write the formula of each ion that is forming the following compounds:
(a) KCl ………… …………
(b) BaS
……….. …………
(c) MgBr2 ………… …………
(d) Li2O
……….. …………
(e) AlN
…………
…………
(f) Be3As2 ………… …………
(g) K3P
…………
…………
(h) CaF2
………… …………
2. Which of the following pairs of atoms would you expect to combine chemically to form ionic compounds?
Then use the electron dot diagram to show how the compound is formed, Write the formula then name it.
(a) Lithium & Sulfur
(b) Oxygen & Phosphorus
(b) Iodine & Gallium
(d) Fluorine and Chlorine
(e) Strontium & Nitrogen
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3. Explain why ionic compounds are electrically neutral.
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
4. Classify each atom in the following list according to the following questions:
a. Will each atom form a cation or an anion?
b. Is it chemically reactive or unreactive?
c. Write the number of electrons the atom will gain or lose.
1. Lithium:
2. Sodium:
3. Neon:
4. Chlorine:
5. Magnesium:
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5. Write the formula of the following ion or atom:
(a) Iodide ion …………
(b) Rubidium ion
………..
(c) Selenide ion …………
(d) Aluminum ion
………..
6. Which of the following compounds are ionic?
(a) FeO
reason: ………………………………………………………………………………………………
(b) CO2
reason: ………………………………………………………………………………………………
(c) H2O
reason: ………………………………………………………………………………………………
(d) Pb3N2
reason: ………………………………………………………………………………………………
(e) CaS
reason: ………………………………………………………………………………………………
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