Option A is correct. When a person says "<em>I think</em><em> that between an elephant and a monkey that jumped off the cliff, both of them will hit the ground at the same time."</em> the person is stating his Hypothesis
A hypothesis is an explanation proposed or given based on a piece of evidence that is limited.
It is useful at the beginning of an investigation because it serves as the building block for an impending fact or law.
From the statement, we can see that the person is not too sure of the information provided since he "thinks". <em>He said, </em><em>"I think</em><em> that between an elephant and a monkey that jumped off the cliff, both of them will hit the ground at the same time." </em>
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Hence we can conclude that the person is stating a hypothesis.
Law and theory are incorrect because they are already proven facts.
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Answer:
Light changes speed in a glass of water.
Explanation:
Answer: C) a redox reaction that produces an electric current
Explanation:
Chemical cell is a device which is used for the conversion of the chemical energy produced in a redox reaction into the electrical energy. The cell consists of the negative terminal called as anode where oxidation takes place and a positive terminal called as cathode where reduction takes place.
Electrolytic cell is a device which is used to carry out chemical reactions by the use of electrical energy. The cell consists of the negative terminal called as cathode where reduction takes place and a positive terminal called as anode where oxidation takes place.
D. a compound can only be separated into its components by chemical means
