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Delete - Last Modified By: FBA at 13/06/2016 9:19:54 PM
Experimental design questions
A researcher designs an experiment to see what how temperature affects the rate at which salt crystals dissolve. She dissolves crystals at 0 degrees C, 10 degrees C, 20 degrees C and 30 degrees C.
1. What is the independent variable?
2. What is the dependent variable?
3. Give at least 3 variables that need to be controlled.
4. Write a step-by-step method the researcher could use.