Tips for eAssessment:

1. For all numerical questions, write the correct formula, substitute values, and show your calculation step-by-step.
2. Always round off your final answer to match the least precise value used in your calculation.
3. Precision rule: The final value cannot be more precise than the least precise measurement used in the calculation.
4. Final answers should have the correct number of significant figures and proper units.
5. Use specific scientific vocabulary. Avoid vague terms like “over there.”
6. Hypothesis should clearly state the independent and dependent variables.
7. Include a brief scientific explanation for the hypothesis even if not asked.
8. Always explain how you will manipulate the IV, measure the DV, and control the CVs.
9. If the question says design a safe method, include specific safety precautions.
10. If only “precaution” is mentioned, explain how you will ensure reliability by doing 3 trials and state what kind of errors you're minimizing (e.g., parallax, timing errors).
11. Define the range and increments of the independent variable to ensure enough data is collected.
12. Units should be written once in the column headers of data tables—not next to each value.
13. Explain the need for repeated trials to improve the reliability of results.
14. Know that a direct relationship means a constant ratio and a graph passing through the origin—not just a straight line.
15. If systematic errors are mentioned, describe how to correct readings, not avoid them (e.g., subtract background radiation).
16. State the cause and effect clearly in your advantages/limitations—don’t just list them.
17. Safety Precautions depend on the experiment:
• Use of goggles when handling acids or bases.
• Use of gloves when handling hot apparatus or chemicals.
• Keep electronics away from liquids.
• Use a fume hood when heating volatile substances.
• Keep flammable materials away from open flames.