Question

1-12 Judge the following statements as true (T) or false (F) A. Air and water are both elements. B. All mixtures contain at least one element and one compound. C. Elements can exist in any of the 3 states of matter. D. When yellow stains in the kitchen sink are treated with E. The number 0.0033 has more significant figures than F. Compounds always contain at least 2 different bleach water, the disappearance of the stains is due to a physical change. 0.033 elements
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Ans :

The substances can be basically divided into 3 categories bases on their chemical composition , i.e. elements , compounds and mixtures.

Elements are purest form of substances as it contain like atoms and molecules , compounds have more than kind of atoms , whereas the mixtures can contain different atoms and compounds which vary in composition.

A : false

B : false

C : True

D : False

E : false

F : True

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