What is a testable question for rock candy?

Here are some testable questions about rock candy, categorized by the type of investigation:

Focusing on Crystal Growth:

* Does the type of sugar used (granulated, brown, etc.) affect the size or clarity of the rock candy crystals?

* How does the concentration of sugar in the solution (syrup) affect the speed of rock candy crystal growth?

* Does the temperature of the sugar solution affect the size or shape of the rock candy crystals?

* Does adding impurities to the sugar solution (like food coloring or flavoring) affect the growth of the rock candy crystals?

* What is the optimal time for growing rock candy crystals to achieve the desired size and shape?

Focusing on Crystal Structure:

* How does the shape of the seed crystal (the initial crystal used to start the growth) influence the shape of the final rock candy crystal?

* Does the presence of a stirring mechanism affect the crystal growth pattern and the final shape of the rock candy?

* Can different crystal shapes be created by manipulating the conditions during the growth process?

Focusing on Factors Affecting Growth:

* Does the humidity in the room affect the rate of evaporation and therefore the speed of rock candy crystal growth?

* Does the presence of air bubbles in the sugar solution affect the formation of rock candy crystals?

* How does the surface area of the string or stick used to grow the rock candy affect the size of the resulting crystals?

Remember to:

* Keep your question focused and specific.

* Make sure your question is answerable through experimentation.

* Consider the safety of the experiment and any necessary precautions.

Good luck with your rock candy investigations!