Metalloids — Unit test Answers
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Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of the atom, but they are not in the correct order.In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one?
A
Y, X, Z, WB
Y, Z, W, XC
W, Z, X, YD
W, Y, Z, X22
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Which lists only metalloids?
A
arsenic (As), sulfur (S), and polonium (Po)B
antimony (Sb), tellurium (Te), and gallium (Ga)C
boron (B), germanium (Ge), and tellurium (Te)D
polonium (Po), aluminum (Al), and silicon (Si)23
Which properties are characteristic of metalloids?
A
high electrical conductivity and a high melting pointB
low electrical conductivity and a low melting pointC
intermediate conductivity and a high melting pointD
intermediate conductivity and a low melting point24
An atom of the element zinc has an atomic number of 30 and a mass number of 65. How many protons does an uncharged zinc atom have?
A
30B
35C
65D
9525
A blue circle labeled proton and A overlaps a pink circle labeled electron and C. The overlap is labeled B.
A
Is found in the nucleusB
Has mass of 1 amuC
Orbits the nucleusD
Is electrically chargedDid you find these answers helpful?
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