⚡ Part 1: Understanding Electrolysis

1. Complete this sentence with your own metaphor:

Electrolysis is like ___________________________________________________

because _____________________________________________________________

2. What does the word "electrolysis" mean? Circle the best answer:

Using electricity to heat water

Splitting substances using electricity

Creating electricity from chemicals

Mixing salt and water together

3. Which New Zealand industry uses electrolysis to purify aluminium?

🔬 Part 2: Equipment and Safety

4. List the equipment we used in our electrolysis experiment:

5. Which safety equipment did we wear during the experiment? Check all that apply:

Safety glasses

Gloves

Lab coats

Closed shoes

6. Draw and label the experimental setup we used:

👀 Part 3: Observations

7. What did you observe during the experiment? Fill in the table:

What we saw: _______________________________________________

What we smelled: _____________________________________________

Colour changes: ______________________________________________

Which spoon had more bubbles: ________________________________

8. Circle the correct observation:

Bubbles formed on both spoons equally

More bubbles formed on one spoon than the other

No bubbles were produced

The water turned completely black

9. What do you think the bubbles were made of?

🤔 Part 4: Scientific Thinking

10. What might happen if we changed the salt concentration? Make a prediction:

11. Match the scientific terms with their meanings:

1. Ion

2. Electrode

3. Electrolyte

4. Chemical change

A. A substance that conducts electricity

B. A charged particle

C. A metal conductor in the circuit

D. A reaction that creates new substances

12. One question I still have about electrolysis is:

🌍 Part 5: Real World Applications

13. Besides aluminium production, where else might electrolysis be used? Check all possibilities:

Making jewellery shiny (electroplating)

Purifying water

Producing hydrogen fuel

Cooking food

Extracting metals from ores

14. How does electrolysis help New Zealand's economy?

15. Homework Challenge: Find ONE device or object at home that might have used electrolysis in its making. Describe it below:

Object: ___________________________________________________

How electrolysis was used: ________________________________

📝 Part 6: Reflection

16. Complete this paragraph about what you learned today:

Today I learned that electrolysis is _________________ and it works by ________________. The most interesting thing I discovered was ___________________. This is important in New Zealand because ____________________. I would like to learn more about ________________.

17. Rate your understanding of electrolysis. Circle one:

I understand it completely

I understand most of it

I understand some of it

I need more help to understand