Presentation on theme: "Biological Sciences Nursing Healthcare Sports & Exercise Sciences Pharmacology Health Services Forensic Sciences Medical Research Energy Speech Therapy."— Presentation transcript:
Biological Sciences Nursing Healthcare Sports & Exercise Sciences Pharmacology Health Services Forensic Sciences Medical Research Energy Speech Therapy Teaching Physiology Technician – Science & Technology Dietician Biochemistry Biomedical Science Medical Sales Natural Science
Each year is split into 3 units. All three together are worth 100% of the total AS Level: AS: Unit 1: Science at Work – portfolio. (33%). Unit 2: Analysis at Work – portfolio. (33%). Unit 3: Monitoring of the Human Body – Exam. (33%).
Each year is split into 3 units and is worth 100% of the total A2 Level: A2: Unit 8: Investigating the Scientist’s Work– portfolio. (33%). Unit 9: Sampling, Testing & Processing - Exam. (33%). Unit 15: Applications of Biotechnology. (33%).
Testing for ions
HOW? Learning Outcomes: (Grade C) (Grade B) (Grade A/A*) Name some ions that produce different coloured flames and produce coloured precipitates Recall the colour of flames or precipitates produced by barium, copper, potassium, & strontium Deduce the ion present in a compound when given the flame colour or precipitate information Tests for ions
Ions revision Atoms form ions by either gaining or losing electrons Na + Ca 2+ K + Br -
Identifying elements In a laboratory, pure elements are available and usually labelled. In other areas, the presence of particular elements is unknown and must be tested. Flame tests are used to confirm the presence of some elements.
1. Flame tests Positive ions produce different flame colours. We can use these colours to find out what positive ion a compound contains.
Carrying out flame tests You will be using Hydrochloric acid This is dangerous! In all experiments, you should work with an awareness of GLP (Good Laboratory Practice). Get into the habit of recording everything!
Watch Miss Fergus demonstrate. GOGGLES ON! Off you go.
CompoundFlame colour Lead chloride Sodium chloride Potassium chloride Strontium chloride Copper sulphate lilac Bright orange Blue/white Blue/green Bright red
Homework: Hand in September first lesson Throughout the course you must identify the vocational context for each investigation. You have done some testing for ions. Write a 2-3 page report titled “Industries that use ion testing and how they use these results.” Include a referenced bibliography.
You need: B in your Year 11 Additional GCSE. 43 points overall (average of B/C for all subjects).