Calderglen High School
Chemistry Homework 2 – Bonding
1.
Circle the correct word to complete the sentence.
non metal
In a covalent compound
atoms join together.
metal
2.
Circle the correct words to complete the sentence
In a covalent bond the positive / negative / neutral protons attract the shared pair of
protons / neutrons / electrons.
3.
A number of diagrams can be used to show all outer electrons in a molecule of hydrogen.
H
H
H
H
Using a similar diagram draw a molecule showing all outer electrons for a molecule of
(a)
ammonia NH3
(b)
hydrogen fluoride HF
4.
Identify the two oxides which react together to form a covalent compound.
5.
Identify the two elements which would react together to form a molecule with the same shape as an
ammonia molecule NH3.
6.
Match the shape to each molecule named below.
Molecule:
Shape:
Methane CH4
Linear
Hydrogen chloride HCl
Tetrahedral
Silicon carbide SiCl4
Calderglen High School
Chemistry Homework 2 – Bonding