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Chemistry A Semester Exam Questions And Answers 100% Pass
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Chemistry A Semester Exam Questions And Answers 100% Pass Two samples of solids have similar reactivity with acids and similar densities. Their masses and volumes, however, are not at all similar. Is it possible that these are the same substance? No, it is not possible because they have differe...

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  • November 3, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
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©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM


Chemistry A Semester Exam Questions And
Answers 100% Pass


Two samples of solids have similar reactivity with acids and similar densities. Their masses and
volumes, however, are not at all similar. Is it possible that these are the same substance?


No, it is not possible because they have different intensive properties


Yes, it is possible because they have similar intensive properties


No, it is not possible because they have different extensive properties


Yes, it is possible because they have similar extensive properties - answer✔Yes, it is possible
because they have similar intensive properties
Melting gold with other metals makes 10-karat gold. Which term best describes 10-karat gold?


Homogeneous mixture


Pure substance


Heterogeneous mixture


Compound - answer✔Homogeneous mixture

, ©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM

How do chemists predict the shapes of molecules?


Due to the repulsion between electrons, valence electrons will be arranged as far apart from each
other as possible


Chemists can't predict the shape of molecules, because the attractive forces between valence
electrons are unpredictable


Due to the repulsion between electrons, valence electrons will be arranged as close to each other
as possible


Due to the attraction between electrons, valence electrons will be arranged as close to each other
as possible - answer✔Due to the repulsion between electrons, valence electrons will be arranged
as far apart from each other as possible
Lead has an atomic number of 82. Which statement describes all neutral atoms and ions of lead?


Neutral atoms of lead must have 82 electrons. Ions must have 82 electrons, as well


Neutral atoms of lead must have 82 protons, but ions have more or fewer


Neutral atoms of lead must have 82 protons. Ions must have 82 protons, as well


Neutral atoms of lead must have 82 neutrons, but ions have more or fewer - answer✔Neutral
atoms of lead must have 82 protons. Ions must have 82 protons, as well
How did the study of the atom contribute to our understanding of the periodic table and of the
elements?


Elements are made of atoms, so understanding atoms provided information about elements,
which led to the organization of the periodic table

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