Science 10
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Chapter 5 Chemistry Quiz 1c
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1. Matter is generally classified into 2 broad categories – pure and impure. What is the word for
each category – a) pure matter and b) impure matter?
2. Use our understanding of particle theory to describe/define pure matter (talk about particles).
3. What are the two classifications of pure matter?
4. What is the one-word common term for a homogeneous mixture?
5. Homogeneous mixtures and heterogenous mixtures are both made up of two or more kinds of
particles mixed together. So, what is the difference between a homogeneous mixture and
heterogenous mixture? (How would you determine which type of mixture to classify it?)
6. a) Name the neutral particle of a molecular compound.
b) Name the neutral particle of an ionic compound.
7. You have 2 compounds, and each appears as white crystals. You are told one is ionic and
one is molecular. Using a conductivity meter, how would you experimentally determine
which is which?
8. How does the periodic table help to determine electron configuration of an element/atom?
Specifically, what does the period (row) number and group (column) number tell us?
9. a) Draw the Bohr diagram for the magnesium atom. Under the diagram, state the number of
protons and electrons, and show the symbol of the atom with its charge, if any.
b) Draw the Bohr diagram for the magnesium ion. Under the diagram, state the number of
protons and electrons, and show the symbol of the atom with its charge, if any.
10. a) Draw the Bohr diagram for the sulfur atom. Under the diagram, state the number of
protons and electrons, and show the symbol of the atom with its charge, if any.
b) Draw the Bohr diagram for the sulfide ion. Under the diagram, state the number of
protons and electrons, and show the symbol of the atom with its charge, if any.
11. Copy and complete the following chart:
compound
ionic or molecular name of particle
a. SF6
b. Al(NO3)3
c. KOH
d. CO2
12. a) What is the name of the type of bond in an ionic compound?
b) What is the name of the type of bond in an molecular compound?
13. Hydrogen is a gas, not shiny, not hard, not a conductor; yet, it is classified as a metal. Why?
14. a) Which of the following elements is not a metalloid? B, Al, Si, Ge, As, Sb, Te, Po, At
b) Name 2 elements that will react by gaining 3 electrons to become stable.
15. Looking at the periodic table,
a) What element has 2 electrons in its outer (fifth) energy level?
b) Find iodine (I). Based on its location, how many energy levels does it have, and how
many e’s in its outer level?
16. Why do ionic compounds have higher melting points than solid molecular compounds?
(Hint: bonds)
17. a) What is the word/term for a positively charged ion?
b) What is the word/term for a negatively charged ion?
BONUS: Name any 2 chemical properties of matter.