Standard Grade Chemistry
Credit Level
Topic 3
Homework 2
1. (2011C)
A student made the following statements about the particles found
in an atom.
Identify the two statements which apply to an electron.
(1KU)
2. (2010C)
The grid shows information about some particles.
(a)
(b)
Identify the two particles with the same number of neutrons.
(1KU)
Identify the particle which has the same electron
arrangement as neon.
(1PS)
3. (2009C)
The grid contains information about the particles found in atoms.
Identify the two terms which can be applied to protons.
(2KU)
4. (2009C)
Many chemical compounds contain ions.
(a)
Identify the compound which produces a green flame colour.
You may wish to use the data booklet to help you.
(1PS)
(b)
Identify the compound in which both ions have the same
electron arrangement as argon.
(1PS)
5. (2009C)
There are three different types of neon atom.
(a)
Copy and complete the table to show the number of protons
and neutrons in each type of neon atom.
(1KU)
(b)
What term is used to describe these different types of neon
atom?
(1KU)
(b)
A natural sample of neon has an average atomic mass of 20.2.
What is the mass number of the most common type of atom in
the sample of neon?
(1PS)