Question 1

What should I focus on for Open College Network Northern Ireland Other General Qualification Applied Science?

Accepted Answer

Practice constructing flowcharts for qualitative analysis to ensure a systematic approach and avoid missing critical confirmatory tests.

Question 2

What should I focus on for Open College Network Northern Ireland Other General Qualification Applied Science? (2)

Accepted Answer

In chromatography tasks, always mark the solvent front immediately upon removal from the tank and measure distances to the nearest millimetre for accurate Rf calculations.

Question 3

What should I focus on for Open College Network Northern Ireland Other General Qualification Applied Science? (3)

Accepted Answer

When determining pH, use a combination of universal indicator and a calibrated pH meter, and cross-reference with expected pH ranges for common substances.

Question 4

What should I focus on for Open College Network Northern Ireland Other General Qualification Applied Science? (4)

Accepted Answer

For detecting chemicals in unknowns, prioritise tests that give unambiguous results first (e.g., flame tests for cations) before proceeding to anion analysis.

Question 5

What should I focus on for Open College Network Northern Ireland Other General Qualification Applied Science? (5)

Accepted Answer

In practical assessments, meticulously document each step, including reagent volumes and any deviations from standard methods, to demonstrate thorough understanding of the analytical process.

Question 6

What are common mistakes in Open College Network Northern Ireland Other General Qualification Applied Science?

Accepted Answer

Failing to add dilute nitric acid before testing for halide ions with silver nitrate, leading to false positives from carbonate interference.

Question 7

What are common mistakes in Open College Network Northern Ireland Other General Qualification Applied Science? (2)

Accepted Answer

Confusing the pH scale by assuming that a neutral solution always has a pH of exactly 7, without considering temperature dependence or dilution effects.

Question 8

What are common mistakes in Open College Network Northern Ireland Other General Qualification Applied Science? (3)

Accepted Answer

Overloading the chromatography paper with sample, causing streaking, or using a developing solvent that is too polar, leading to poor separation.

Applied Science

Ready to practise?

Key Features

What Gets Top Grades

Knowledge & Understanding

Application

Analysis & Evaluation

Key Command Words

Common Exam Mistakes

Top Examiner Tips

Specification Topics

OCN NI Level 2 Certificate in Applied Science

OCN NI Level 2 Extended Certificate in Applied Science

Ready to master Applied Science?