1. What is the difference between a controlled experiment?
2. What is the purpose of using a control in an experiment?
3. What is the difference between an independent variable and a dependent variable?
4. Why do people take Alka-Seltzer? What is its purpose?
1. How do you know this reaction has ended?
2. Application: How does this reaction explain the use of medicine in the body?
3. What is the purpose of having the same size tablet and amount of water?
4. How does the temperature increase or decrease indicate?