Question

Melissa heated a few blue crystals in a test tube. After a few minutes, she observed that the crystals had turned white and a film of water had formed on the inside of the test tube. Before Melissa conducted this experiment, she probably _____.
Select one:
a. developed a hypothesis
b. developed a scientific law
c. developed a bias
d. developed a theory

Answer 1

http://www.livescience.com/21490-what-is-a-scientific-hypothesis-definition-of-hypothesis.html

(This is for hypothesis)

Answer 2

A scientific law is a statement based on repeated experimental observations that describes some aspects of the universe. A scientific law always applies under the same conditions, and implies that there is a causal relationship involving its elements.

Answer 3

https://explorable.com/research-bias

(This is for bias)

Answer 4

Theory is a contemplative and rational type of abstract or generalizing thinking, or the results of such thinking.

Answer 5

I would give you the answer but, analysing is important.... so take the websites and you will get the answer. I am not breaking the code of conduct.

Answer 6

Melissa is using the scientific method consisting of a cycle of observations, hypothesis, experiments, refinements. This is repeated until a theory can be developed.
See:
https://en.wikipedia.org/wiki/Scientific_method

Answer 7

...she probably "hydrated some anhydrous copper sulphate"