Answer:Rule 1: The oxidation number of an element in its free (uncombined) state is zero — for example, Al(s) or Zn(s). This is also true for elements found in nature as diatomic (two-atom) elements
Explanation:
According to the research, the correct option is false, the statement related to a chemical reaction is false.
<h3>What is a chemical reaction?</h3>
They are reactions involving two or more substances (reactants), which change significantly in the process, and can consume or release energy.
Every chemical reaction subjects matter to a chemical transformation, altering its structure and molecular composition.
Therefore, we can conclude that according to the research, the correct option is false, the statement related to a chemical reaction is false.
Learn more about a chemical reaction here: brainly.com/question/14929452
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Answer:
Pure Substance. A sample of matter, either a single element or a single compound, that has definite chemical and physical properties. Element. A pure substance that cannot be broken down into other substances by chemical or physical means.
Explanation:
Sorry if it's wrong!!!!!!!
Answer:
23892U=23490Th +42He
Explanation:
In alpha decay, the daughter nucleus is two units less than the parent in atomic number. The mass number also decreases by 4 units. The daughter is thus found two places before the parent in the periodic table.
In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment.
