<span>19. Single displacement reactions are always redox reactions (they include reaction between an element and a compound where they will take place of another element in that compound).
20. It should be single displacement, where the displaced ion would form gas.</span>
I think the correct word to fill in the blank would be carbon. Organic compounds are composed of carbon and at least one hydrogen atom. It is basically any compound that would contain carbon and covalently bonded to other elements or atoms usually these are hydrogen, nitrogen and oxygen. All living things are based on these compounds. These are the building blocks of organic chemistry. These compounds can be seen anywhere in Earth. May it be animals, plants, the soil, sugar, microorganisms and even in humans. Examples of these compounds are methanol, DNA, glucose, hexane, acetic acid, butane and the like.
Answer:
B) a prediction
Explanation:
It is not option A because an experiment is one or more tests to see the check of a phenomenon in certain circumstances.
The idea is to validate or refute a hypothesis.
It is not option C because one theory is based on many proven hypotheses.
The correct option is B, a prediction. It is the principle that will lead us to a theory.
Answer:
Ernest Rutherford discovered the existence of a center of the atom.
Explanation:
Answer:
A phosphorus atom forms a P3- ion by gaining three electrons.
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