Worksheets3rd form MC Exam Practice
Total questions: 20
Worksheet time: 12mins
An atom with an atomic number of 15 and an atom with an atomic number of 9 would:
Form a covalent compound
Form an ionic compound
Form a metallic lattice
Not bond with each other
Ionic bonding occurs between:
Two metals
A metal and a non-metal
A metalloid and a non-metal
Two non-metals
Covalent bonding occurs between:
Two metals
A metal and a non-metal
A metalloid and a non-metal
Two non-metals
The number of bonds that an atom can form when it bonds with another atom is called
Atomic number
Covalency number
Valence number
Mass number
How many electrons are shared in a double bond?
2
3
4
6
How many electrons are shared in a triple bond?
2
4
6
8
A molecular formula:
Is a diagrammatic representation of one molecule of the compound using lines to represent bonds
Is the simplest whole number ratio between elements in a compound
Is the actual number of atoms of each element
Is the formula of an element
An empirical formula:
Is a diagrammatic representation of one molecule of the compound using lines to represent bonds
Is the simplest whole number ratio between elements in a compound
Is the actual number of atoms of each element
Is the formula of an element
What changes when an ion is made from an atom?
the number of electrons only
the number of neutrons only
the number of protons only
the number both of protons and of neutrons
Ionic compounds can only conduct electricity when in aqueous solution because:
Water molecules conduct electricity
Electrons become free when they are in aqueous solution
The ions become free when they are in aqueous solution
Protons becomes free when they are in aqueous solution
The mass of one mole of a substance expressed in grams/ mol is called:
The relative formula mass
The relative atomic mass
The molar mass
The molecular mass
What type of lattice structure do ionic compounds have?
Simple molecular lattice
Ionic lattice
Metallic lattice
Giant molecular lattice
What is mass of 2.5 mol of sodium nitrate?
212.49
0.029
34
42
What is the name of the group 1 elements in the periodic table?
halogens
alkali metals
noble gases
transitional metals
What is the name of the group 7 elements in the periodic table?
halogens
alkali metals
noble gases
transitional metals
What is the name of the group 8 elements in the periodic table?
halogens
alkali metals
noble gases
transitional metals
What group of the periodic table is the most reactive?
halogens
alkali metals
noble gases
transitional metals
What group of the periodic table is the most unreactive?
halogens
alkali metals
noble gases
transitional metals
Which of the following is insoluble in water?
lead sulphate
sodium chloride
calcium nitrate
ammonium chloride
Which of the following elements have the same properties as Na?
Ca
Al
Mg
Li
