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WorksheetsFormula Writing
Total questions: 25
Worksheet time: 46mins
What group in the periodic table can Sodium be found?
Group 1
Group 7
Group 2
Group 8
Columns in the periodic table are called?
(a)
What is the significance of the group number of an element?
The group number tells the number of electron shells that are present within an atom
The group number signifies the number of protons present
The group number tells the number of valence electrons of an atom
Number tells the amount of neutrons present
Lithium is a metal found in group 1 of the periodic table. How many valance electron does a lithium atom contain?
2 electrons
5 electrons
3 electrons
1 electron
A positively charged ion is called a/an
(a)
Why is an atom electrically neutral??
It has an equal number of protons and neutrons
It has an equal number of electrons and neutrons
It has an equal number of protons and electrons
It has more protons than neutrons
What is the name of group 1 elements?
Halogens
Alkali metals
Alkaline earth metal
Nobel gases
What are the symbols for sodium, potassium and Calcium, respectively?
S, P, Ca
Na, K, Ca
Na, P, Ca
S, K, Ca
What is the formula for Sodium Chloride?
An ion is electrically neutral
True
False
Neutral means…
A net charge of zero
The molecule has a dipole
There are more electrons than protons
There are more protons than electrons
What are the charged species in an atom?
Protons and neutrons
Protons only
Neutrons and electrons
Protons and electrons
What is the name of the compound: Fe2O3
Iron (II) oxidate
Iron (II) oxide
Iron (III) oxide
Iron oxide
Which of the following is a polyatomic ion?
Sodium chloride
Sulfate Ion
Magnesium carbonate
Oxide Ion
Elements in the same group have the same number of valence electrons?
True
False
When a Calcium atom is converted to a Ca2+ ion, what change took place?
An electron was lost
2 electrons were gained
2 electrons were lost
A electron was gained
Name the polyatomic ion with formula: CO3
Sulfate
Sulfite
Carbonate
Phosphate
What is the oxidation state of Fe in Fe (II) oxide?
What is the charge on the sulfate ion?
2-
-1
-5
-3
Write the formula for Sodium sulfate:
Choose the correct formula for Magnesium Carbonate
MgCO3
Mg(CO3)2
MgCO2
Mg2(CO3)2
What is the cation in the ionic compound Calcium phosphate
Choose the correct formula for sodium sulfate
Na2(SO4)3
Na2SO4
NaSO4
NaSO3
CSEC PAST PAPER QUESTION:
Define the term anion and give an example
CSEC PAST PAPER QUESTION:
Sodium and oxygen are in the same group of the periodic table because?
They can react with each other
They can form covalent compounds
They have the same number of electrons in their outer shell
The atomic number of sulfur is 16 and the relative atomic mass of oxygen is 16
