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...
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?
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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