anonymous
  • anonymous
A compound is a pure substance that is composed of more than one type of element. Which of the following statements is true of compounds? Compounds can be decomposed into their component parts through physical processes. There is only one type of compound, so they all have similar characteristics and compositions. Compounds have definite chemical compositions that can be described by chemical formulas. Compounds have properties which are identical to the properties of their component elements.
Physics
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SOLVED
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schrodinger
  • schrodinger
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JamesJ
  • JamesJ
What's an example of compound?
JamesJ
  • JamesJ
Water is an example of a compound. Water is two hydrogen atoms and one oxygen molecule: \( H_2O \). Table salt is another, \(NaCl \) a sodium and chlorine atom. Hence the second statement, "There is only one type of compound, so they all have similar characteristics and compositions" is false
JamesJ
  • JamesJ
What about the fourth statement, "Compounds have properties which are identical to the properties of their component elements" ?

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anonymous
  • anonymous
it's 'Compounds have definite chemical compositions that can be described by chemical formulas.' right?
JamesJ
  • JamesJ
I think more than one answer is correct.
anonymous
  • anonymous
no, only one...
JamesJ
  • JamesJ
"Which of the following statementS is true of compounds?" I guess it depends what we mean by physical processes.
anonymous
  • anonymous
there are the physical processes (filteration, distillation, crystallisation etc )and the chemical processes like electrolysis
JamesJ
  • JamesJ
yes. If a physical process also includes super-hot heating, that also works.
anonymous
  • anonymous
I don't think we can crack a compound using physical processes. Well, except in the case of dissociation, which is probably the only exception.
JamesJ
  • JamesJ
I'll defer to you guys who are closer to High School science, to which (I hope) this question belongs.
anonymous
  • anonymous
But dissociation is more of an equilibrium thing. Once we cool it back down, the compound will un-dissociate.
JamesJ
  • JamesJ
'un-dissociate'. Nice.
anonymous
  • anonymous
I'm fond of highly technical words.
JamesJ
  • JamesJ
;-)

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