Skip to main content

Assessment Tips

There are five topics in Pūtaiao 102

  1. Genetics (ext.) – finished in Term 1
  2. Microbes (int.) – finished yesterday
  3. Chemistry Tūhura (int.) – we were half-way through this topic when the lockdown began in Term 1
  4. Mechanics (ext.)
  5. Chemical Reactions (int.)

AS 90930

Chemistry Tūhura

(The 2nd half)

Internal, 4 Credits


For the assessment, you must:

  1. Conduct a Chemistry whakamātau (2 periods)
  2. Write a report on the whakamātau and the data you have gathered (1 period)

To get an Achieved, you must:

  1. Write the method of your whakamātau
  2. Identify variables (Independent, Dependent and Control)
  3. Make repeat measurements and calculate the average
  4. Describe the trend in the results/data
  5. Write the conclusion based on the data collected

To get an Merit, you must:

  1. Write the method of your whakamātau to a higher quality
  2. Identify variables and describe how the control variables have been controlled
  3. Make accurate, repeat measurements and calculate the average
  4. Describe the trend in the results/data
  5. Write the conclusion based on the data collected

To get an Merit, you must:

  1. Explain how the control variables that could have significantly affected the results have been controlled
  2. Explain the techniques/methods that were used to ensure the accuracy of the results obtained

To get an Excellence, you must:

  1. Complete everything up to Merit level, plus:
  2. Explain your results using the “Collision Theory”
  3. Discuss the techniques/methods you have used to ensure the results you obtained are reliable and valid
  4. Discuss on how your method could improve

Step 1: Aim & Hypothesis

In your group:

  1. Title your whakamātau
  2. Come up with an aim (What are you investigating? Be specific.)
    • Get this from your instruction card
  3. Come up with a hypothesis (What do you predict? Be specific.)
    • I think that the rate of reaction will [increase/decrease] when the [surface area/temperature/concentration] [increases/decreases].

Step 2: Variables


Step 3: Control Variables & Reliability


Step 4: Method


Step 4: Continued


Step 5: Data/Results


Trial 1Trial 2Trial 3Average
Powder
Small Chips
Large Chips

Average: Add up all your trial times (in seconds) and divide by the number of trials.


Step 6: Data/Conclusion


If you have successfully filled out the document as we have discussed, you now have a merit!

This next step is for excellence!


Step 7: Discussion/Evaluation