1. What is the scientifec procedure done to test whether a hypothesis is true or false?

A. Theory. C. Experiment.
B. Inference. D. Conclusion.

2. Which step in the scientific method is done when a scientist thinks whether the data fathered from his experiment support the hypothesis?

A. Ask a question. C. Make a hypothesis.
B. Draw a conclusion. D. Conduct an experiment.

3. A group of student wants to know if the height of the plant will change if they change the amount of water the plant receives. What is the dependent variable in the experiment?

A. Types of solid solute. C. Types of plant.
B. Time of watering D. height of the plant.

4. Dennis investigates which solid solute will dissolve later in water at room temperature. What is the independent variable in his experiment?

A. Types of solid solute. C. Amount of water.
B. Amount of solid solutes. D. Temperature of water.

6. Mark and Louis investigated which of their toy race cars rolling down a ramp would go the farthest? If you were them how will you make the experiment a fair test?

A. The height of the ramp should be the same.
B. The weight of the cars should be the same.
C. The shape of the cars should be the same.
D. The weight of the ramp should be the same.

7. What will be produced when two different atoms are combined?

A. element. C. solution.
B. compound. D. colloids.

8. Which of the following is an element?

A. salt. C. alloy
B. water. D. oxygen.

9. Water molecules are split into hydrogen and oxygen though electrolysis. How does a compound break down further?

A. though chemical change. C. though distillation process.
B. though physical change. D. though decantation process.

10. Which of the following describe the property of an element?
A. It is made up of only one type of atom
B. It can be broken down further through chemical change.
C. It is made up of two or more types of atom.
D. It can be broken down further through physical change.