TASK 2: Practical Portfolio Report (500 words) (2.5, 2.6, 3.1]
2 5 Interpret physical data relating to compounds_
2.6 Construct formulae for a range of compounds
3 1 Explain qualitatively and quantitatively the differences between compounds and mixtures.
Background Information
The analysis of chemical compounds to confirm their identity and characteristics is part of the daily work done in chemistry laboratories worldwide. Research and forensic laboratories, the pharmaceutical industry, and laboratories involved in monitoring the environment, rely on a wide range of analytical techniques to determine the identity, purity, properties and concentrations of chemical compounds. In order to separate the components of a mixture,
there must be a property difference between the components.
Experiment 1: Paper Filtration
The experiment involves the separation of a mixture of silicon dioxide (SI02) and sodium chloride (NaCI). The experiment illustrates the use of filtration for the separation of an insoluble material from one which is soluble_
MateriaIs required;
• Wear eye protection throughout this experiment.
• Balance
• Glassware :
– 10 or 20 mL measuring cylinder
– 50 mL beaker
– 50 mL Erlenmeyer flask (weighted)
– Filter funnel
– Watch glass (weighted)
• Filter paper (weighted)
• Distilled water
Stirring rod
• Plastic pasteltes
Experimental Procedure
•Write your name on the watch glass, the Erlenmeyer flask and the filter paper.
•Weight the Erlenmeyer flask, watch glass and filter paper and record the values:
Initial Weight (g) Final Weight (g) Weight difference (g)
Erlenmeyer flask
61 , 5″/
Watch glass
)Q . t2t
Filter paper
7hemistry Portfolio
