Name:
Date:
SciTec4
Periodic Table
1. Which of the elements in the table below possess the properties of shininess, electrical
conductivity and malleability?
2. Which of the following atomic models represent elements from the halogen family?
A) 1 and 2
B) 3 and 4
C) 2 and 3
D) 1 and 4
3. Complete the following sentence by choosing the correct response. Fluorine, chlorine, bromine
and iodine belong to the halogen family; they are all used for.
A) Lighting
B) Disinfecting
C) Communication
D) Heating
4. On the basis of these models, which statement justifies grouping the elements in the same
family?
A) The elements belonging to the same family all have two electrons in their first energy level.
B) The elements belonging to the same family all have eight electrons in their last energy level.
C) The elements belonging to the same family all have the same number of electrons in their last
energy level.
D) The elements belonging to the same family all have the same number of electrons in their first
energy level.
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SciTec4
5. Listed below are the characteristics of an element from the periodic table.
• It is a nonmetal.
• Its outermost energy level has seven electrons.
• It is used to purify and disinfect water.
To which group in the periodic table does this element belong?
A) Alkali metals
B) Alkaline earth metals
C) Halogens
D) Inert gas
6. In a laboratory, a scientist noted the following facts about an element:
a. It is a solid.
b. It is a poor conductor of heat and electricity
c. The nucleus of the atom of this element contains less than 18 protons.
d. The outermost electron shell contains 5 electrons.
What is this element?
7. A soil sample has been analyzed and found to contain the following elements:
Calcium (Ca)
Chlorine (Cl)
Magnesium (Mg)
Sodium (Na)
Sulphur (S)
Arsenic (As)
Which two elements that are found in the same group in the periodic table of the elements.
Explain why these elements have the same chemical reactivity using the Rutherford-Bohr
model.
8. State whether the following are metals, non-metals or metalloids.
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Name:
Date:
SciTec4
9. While doing a research project, you noted the following information about five elements.
Classify each element as either metal, non-metal or metalloid.
Element A : is a solid; conducts electricity; has 2 electrons in its outermost shell; has a low density.
Element B : is not malleable ; does not conduct electricity; has 7 electrons in its outermost shell; is light
green in colour.
Element C : has all its outer orbits full; does not form compounds with other elements; is in a gaseous
state; has a very low boiling point.
Element D : is a poor conductor of heat; is very hard; in non-ductile and non-malleable; conducts
electricity.
Element E : is ductile and malleable; is a solid; is a good conductor of heat and electricity; has a high
melting point.
10. Give the family name for each description.
a)
b)
c)
d)
e)
f)
I have 1 electron on my outer shell.
One of the elements has 35 protons.
I have 2 electrons on my outer orbit.
We are unreactive stable elements.
I can be used as a disinfectant.
I have 1 valence electron.
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11. True of False
1. Elements in the same period have the same number of valence electrons.
2. Elements in the same group have the same number of valence electrons.
3. Aluminum is a metalloid.
4. Na, Mg and Al all have the same number of energy levels.
5. Cl has three valence electrons.
6. Li and Be have the same number of ions.
7. Mg has a charge of +2.
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12. Indicate the Period number, group number and number of valence electrons for each of the
following elements.
Element
Period #
Group #
Family Name
Arsenic
Beryllium
Krypton
Phosphorus
Boron
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