Page 280 - SUBSEC October 2017_Neat

UNIT 1
MODULE 1: FUNDAMENTALS IN CHEMISTRY (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

2. Atomic Structure and the Periodic Table (cont’d)

3. Students should be able to:
4.
1.2. describe the structure of Simple treatment:
the atom; properties of protons,
neutrons and electrons
only; their relative masses
and charges, location and
their behaviour in electric
and magnetic fields.

1.3. define the following terms:

(a) mass number;

(b) isotopes; and,

(c) relative atomic and Must include reference to
isotopic masses the mass of carbon-12
12
based on the C
6
scale.

1.4. explain the phenomenon Write equations
of radioactivity; representing nuclear
reactions involving ∝,
β and γ emissions; n/p
ratio. For example, when
representing alpha:

223 219 4
Ra Rn + He
88 86 2
or
223 219 4
Ra Rn + ∝
88 86 2

Properties of particles are
not required. Positrons(r)
are not required.

1.5. 4.1 cite the use of Identification of at least
radioisotopes; three uses.

4.2

CXC A11/U2/17 11