Classify each of the following statements as a hypothesis, law, or theory. (a) the force acting on an object is equal to its mass times its acceleration. (b) the universe as we know it started with a big bang. (c) there are many civilizations more advanced than ours on other planets.

(a) law

(b) theory

(c) hypothesis

Explanation:

Law : It is a concise mathematical or a verbal statement.

Hypothesis: It is a tentative explanation for the observations.

Theory: It is the unifying principle which explains body of the experimental observations and the laws which are based on them.

(a) The force acting on an object is equal to its mass times its acceleration.

This statement is the statement of the second law of the Newton and thus it is a law.

(b) The universe as we know it started with a big bang.

This statement belongs to big bang theory and thus it is a theory.

(c) There are many civilizations more advanced than ours on other planets.

This statement is only based on some tentative observations like aliens, their spaceships and is a hypothesis.

what's the

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.