What is the difference between a hypothesis and a scientific theory?
A) A hypothesis is a tentative proposal and a theory is a tested proposal.
B) A theory is a tentative proposal and a hypothesis is a tested proposal.
C) A hypothesis requires an experiment and a theory does not.
D) A theory requires an experiment and a hypothesis does not.
E) none of the above
Question 2
What is the name of the family of elements in Group VIIA/17?
A) alkali metals
B) alkaline earth metals
C) halogens
D) noble gases
E) none of the above