Cumulative Exam — Cumulative exam Answers
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Particle A has very little mass in comparison to Particle B. Both particles are in the same atom. Which is the best conclusion about Particles A and B?
A
They have the same charge.B
They are located in the nucleus together.C
Particle A has a positive charge, and Particle B is neutral.D
Particle A orbits the nucleus, and Particle B is located in the nucleus.22
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Isra is analyzing the properties of several samples of elements to find out which sample is a metalloid. Which set of properties most likely belongs only to a metalloid?
A
forms basic compounds and is a solidB
has a high luster and is very brittleC
is a gas and has low electrical conductivityD
is brittle and forms acidic compounds23
These models show the electron structures of two different nonmetal elements.
A
Element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table.B
Element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table.C
Element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons.D
Element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.24
Ciara’s bike has rusted, which means that the iron in the metal changed to rust.
A
an energy formationB
an exothermic reactionC
a chemical reactionD
a precipitate formation25
Ella makes this table to organize her notes on whether atoms gain or lose energy during the changes of state.
A
freezing, boiling, and meltingB
melting, vaporization, and sublimationC
sublimation, deposition, and condensationD
freezing, deposition, and condensationDid you find these answers helpful?
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