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WorksheetsCovalent Bonding Quiz
Total questions: 12
Worksheet time: 5mins
How do we identify covalent compounds or substances?
they are made up of metals and non-metals
they are made up of non-metals only
they are made up of metals only
Which of the following are covalent substances?
CO2
NH3
NaF
N ≡ N
MgO
What are covalent bonds?
transfer of electrons
sharing of electrons
Which of the following is the correct dot-and-cross diagram of fluorine molecule?
Which of the following dot-and-cross diagrams of water molecule are correct (valence shell only)?
What is the chemical formula of phosphorous trichloride?
P3Cl
P3Cl
P3Cl
PCl3
Covalent substances have _________ melting point and boiling points due to __________ ________________ forces of attraction. (type the 3 answers with a space between the words.)
(a)
Covalent substances are usually (a) in water.
Which keywords explain whether covalent substances conduct electricity or not?
conduct electricity
does not conduct electricity
free moving ions
no free moving ions nor electrons
neutral, no charge
Which of the following is/are most likely covalent substance(s)?
A: has a boiling point of 78 oC.
B: forms a solution that can light up a lightbulb.
C: insoluble in water and has weak forces of attraction.
D: has a melting point of 500 oC and conducts electricity when melted.
What is the chemical formula of ammonia which is made up of nitrogen and hydrogen atoms? [ N (2, 5) ; H(1) ]
NH
NH2
N3H
NH3
Which statements compare ionic compounds and covalent compounds correctly?
ionic compounds are made up of ions while covalent compounds are made up of molecules
ionic compounds contains strong intermolecular forces while covalent compounds contain weak electrostatic forces.
ionic compounds conducts electricity when solid state while covalent compounds cannot conduct electricity.
ionic compounds transfer electrons while covalent compounds share electrons.
