The Rate of Reaction When Dissolving Sugar

711 Words2 Pages

The Rate of Reaction When Dissolving Sugar

Introduction

I have been asked to perform an investigation on the length of time it

takes for a certain amount of sugar to dissolve in a certain amount of

water at different temperatures. I will investigate whether the time

taken at one temperature and another will be the same, quicker or

slower using scientific methods.

Identifying Key Factors

=======================

The factors that would affect the dissolving rate are: -

· Volume of water

The larger the volume of water, the quicker the sugar will dissolve

because there is more particles for the sugar molecules to collide

with.

· Mass of sugar

The more sugar there is the dissolving rate will be slower as there is

more molecules to collide with the water particles.

· Size of sugar particles

The bigger they are the slower they will dissolve.

· Temperature

The higher the temperature the quicker the sugar will dissolve

The variable I am going to change is temperature. I will keep all

other factors constant to make the experiment fair and so the results

are reliable.

Reasons for doing a pre-test

I am going to perform a pre-test so that I have an idea of the

quantities of Sugar and water I will need to use in my actual

experiment. Doing a pre-test means I will get a more accurate result

when it comes to do the actual experiment.

Pre-test method

Apparatus

· Glass Beaker

· Measuring cylinder

· Tripod

· Bunsen Burner

· Stirring Rod

· Thermometer

· Stopwatch

· Heat proof mat

· For safety: Goggles

· Weighing scales

· Gather equipment and set up as shown below:

· Choose your temperatures (I am going to perform the pre-test with

the temperatures 20°C, 40°C and 60°C)

· Measure 10g of sugar and 100cm³ of 20°C water

· Pour the water and sugar into the glass beaker and start the clock.

Open Document