Answer: Option (A) is the correct answer.
Explanation:
A substance that consists of two or more elements which are chemically combined together and cannot be distinguished by individual properties of its elements is known as a compound.
For example, water is a compound and has chemical formula . Water is non-flammable and non-combustible in nature whereas its elements hydrogen is extremely flammable and oxygen supports combustion.
Thus, we can conclude that in a compound classification of matter includes material that can no longer be identified by their individual properties.
Answer:
Five molecules of oxygen.
Explanation:
Hello,
In this case, considering the given chemical reaction, we must write a five before the oxygen in order to equal the number of oxygen atoms at both the right and left side (ten) so phosphorous remain the same (4):
It means that five molecules of oxygen (O₂) are needed to form one molecule of tetraphosphorous decaoxide (P₄O₁₀).
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