August 2017  Chemistry Regents #6-10

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Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-53 Questions 54-55 Questions 56-59 Questions 60-63 Questions 64-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-80  Questions 81-85

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6 Compared to an atom of C-12, an atom of C-14 has a greater

(1) number of electrons

(2) number of protons

(3) atomic number

(4) mass number		4 isotopes differ in neutrons

7 Elements that have atoms with stable valence electron configurations in the ground state are

found in

(1) Group 1         (3) Group 11

(2) Group 8         (4) Group 18

4 stable configurations group 18

8 A magnesium atom that loses two electrons becomes a

(1) positive ion with a smaller radius

(2) negative ion with a smaller radius

(3) positive ion with a larger radius

(4) negative ion with a larger radius

1 loses whole valance shell and becomes smaller with a positive charge

 

9 An atom of which element has the strongest attraction for the electrons in a bond?

(1) aluminum     (3) chlorine

(2) carbon           (4) lithium

3 largest electronegativity

10 Which type of matter can not be broken down into simpler substances by a chemical change?

(1) an element      (3) a mixture

(2) a solution       (4) a compound

1 definition of element

 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-53 Questions 54-55 Questions 56-59 Questions 60-63 Questions 64-65 Questions 66-69 Questions 70-73 Questions 74-76  Questions 77-80  Questions 81-85

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