2. The changeable factors in an experiment are called
a. conclusions
b. observations c. hypothesis
d. variables
3. The father of "Modern Periodic Table of Elements"
a. Dmitri Mendeleev b. Thomas Edison c. Isaac Newton d. Albert Einstein
4. What is another term for an educated or scientific guess to a problem?
a. conclusion
b. experiment
c. hypothesis
d. inference
5. Which observation suggests that molecules in matter are moving?
a. Acetone vaporizes if left uncovered
c. paint prevents rusting of Iron
b. water become ice
d. chalk clings to the blackboard
6. What is the first step in conducting an experiment?
a. publication of findings
c. formulation of hypothesis
b. identifying the problem
d. analysis of data
7. Which of the following is the branch of Science that deals with the properties, composition, and structure
of matter?
a. Physics
b. Chemistry
c. Geology
d. Biology
8. What change(s) has Science brought to the world?
a. Inventions which lead to greater production and a higher standard of living.​