Belair High School
Caribbean Advanced Proficiency Examination
Unit 1 Internal Assessment
B elair High School
Subject: CAPE Chemistry Unit 1
All You Need to Know!
Name: ___Abbyshay Gayle_____________________
Lab Write-up
Date: _23__/_10__/___21 Lab No: 1
Module: 1 Forces of Attraction
(Skills Tested: ORR, A&I)
Aim: To determine the type of inter-molecular forces present in various substances
Introduction
You are supplied with four different substances. You are required to determine the type of bonds present in each of the substances.
Procedure
A spatula with load of each substance was placed in a clean dry test tube. Each substance was heated for approximately one minute.
A spatula with half load of each substance was added approximately 10cm3 of distilled water. It was attempted to dissolve the substance.
Steps 2 was repeated but with the use of supplied organic solvent.
Observations were recorded in the table below
Results
Results
Substance
|
Heating for approximately
1 minute
|
Attempt to dissolve in water (a polar solvent)
|
Attempt to dissolve in organic solvent
(non-polar solvent)
|
Electrical conductivity in solid form
|
A
|
High melting point
|
dissolves
|
does not dissolve
|
Does
|
B
|
High melting point
|
does not dissolve
|
does not dissolves
|
Good
|
C
|
Low melting point
|
does not dissolve
|
dissolve slowly
|
Poor
|
D
|
Low melting point
|
does not dissolve
|
does not dissolve
|
Poor
|
Treatment of results
State the major type of inter- molecular force present in each substance.
Substance A …………ionic………… Substance C London dispersion forces
Substance B ……Van deer waals…………….… Substance D …………Dispersion………
Based on your observations for substance A, what type of solids would substance A and C most likely be?
Substance A ………ionic………………… Substance C ………Molecular………………….
Substance B ……………crystalline solid
Substance D ………molecular….………………
B elair High School
Subject: CAPE Chemistry Unit 1
All You Need to Know!
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