GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mixture
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pure substance
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compound
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elements
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Detailed explanation-1: -An element is a pure substance which cannot be broken down by physical or methods.
Detailed explanation-2: -Pure substances cannot be broken down by physical means.
Detailed explanation-3: -A pure substance made up of only one kind of atom is called an element. It cannot be broken down into simpler substances through chemical methods. Hydrogen, Carbon, and Silver are examples of elements.
Detailed explanation-4: -Elements are the simplest forms of matter and therefore cannot be broken down into simpler substances by any chemical or physical means. Elements are the building blocks for all other substances. Some examples of elements include hydrogen, oxygen, carbon, and sulfur.
Detailed explanation-5: -Pure substances can be divided into two categories, elements and compounds. You already know that elements are pure substances that cannot be broken down into simpler substances. When elements combine, they form new substances called compounds.