An element cannot_______A. be part of a homogeneous mixture B. interact with oth

Question

An element cannot_______A. be part of a homogeneous mixture B. interact with other elements to form compounds C. be part of a heterogeneous mixture D. be a pure substance E. be separated into other substances by chemical means Which of the following elements has a symbol that is derived from a for A. aluminum B. oxygen C. sodium D. argon E. nitrogen Which of the following is not an intensive property? A. density B. mass C. melting point D. temperature E. boiling point The SI unit for mass is the_______A. kilogram B. pound jounce C. ounce D. gram E. none of these Circle the letters for all of the following that are chemical processes: A. rusting of nail B. freezing of water C. decomposition of water into hydrogen and oxygen gases. D. the condensation of water vapor E. charging a cellular phone Of the following_______is the smallest mass. A. 3.5 kg B. 3.5 times 10^2 mg C. .5 times 10^2 cg D. .5 times 10^2 ng E. .5 times 10^2 mu g

Explanation / Answer

1. option B is the answer. H is an element which interact with other Cl element to form HCl compound.

2. oxygen(O2) and nitrogen(N2) have homo diatomic compound. and Al, Na and Ar exist as mono atomic element. 3. option B is the answer. mass is an extensive property because mass depends on amount.

4. option A.kilogram is the answer.

5. option A, C, E are the chemical process.

6. option D is the answer. 3.5*102ng=3.5*102*10-7 gm=3.5*10-5 gm

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