June 2022 Chemistry Regents #1-5
Highlight to reveal answers and explanations
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Questions |
Answer | Links |
Explanations |
| 1 Which subatomic particles are matched with their
charges?
(1) Protons are positive and neutrons are negative. (2) Protons are positive and electrons are negative. (3) Protons are negative and neutrons have no charge. (4) Protons are negative and electrons have no charge |
2 | Protons= +
neutrons = no charge electrons= - |
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| 2 Which conclusion directly resulted from the "gold
foil experiment''?
(1) Atoms are mostly empty space. (2) Atoms are hard, indivisible spheres. (3) Electrons are located in shells. (4) Electrons have a small mass. |
1 | alpha particles went
right through the gold foil.
Atoms are mostly empty space |
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| 3 The bright-line spectrum of an element is produced
when excited-state electrons
(1) absorb energy and move to higher energy states (2) absorb energy and move to lower energy states (3) release energy and move to higher energy states (4) release energy and move to lower energy states |
4 | excited electrons fall to lower energy levels, releasing energy in the form of light | |
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| 4 The elements on the Periodic Table of the Elements
are arranged in order of increasing
(1) atomic mass (2) atomic number (3) mass number (4) oxidation state |
2 | the order of the PT is based on the atomic number | |
| 5 Atoms of which element in Group 15 have the
greatest electronegativity?
(1) As (3) N (2) Bi (4) P |
3 | Table S...look it up | |
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