Test - Atomic Structure Flashcards

1
Q

2. The measurement of how much matter an object contains is its

A

Mass pg. 18

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2
Q

3. All elements are composed of extremely small particles called

A

Atoms pg.18

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3
Q

4. Each family in the periodic table has its own characteristic properties based on the number of

A

Valence electrons pg.18

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4
Q

13. The total number of electrons in the outer shell of a sodium atom is

A
  1. Pg.16
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5
Q

15. The total number of neutrons in the nucleus of any atom is equal to

A

Mass number minus the atomic number pg.15

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6
Q

16. The maximum number of electrons that can occupy the 2nd shell of an atom of magnesium

A
  1. Pg.16
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7
Q

18. An unstable nucleus results from too many or too few….

A

Neutrons pg.18

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8
Q

20. Which word below is represented by the word “period” on the periodic table?

A

Energy level pg.18

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9
Q

25. When looking at halogens on the periodic table, how does the number of valence electrons change as the energy level is increased?

A

The total number of valence electrons does not change. Pg.13

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10
Q

31. What elements would be the most reactive?

A

Iodine. Pg.17

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11
Q

32. What elements would be the least reactive?

A

Silicon pg.17

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12
Q

37. Arranged the elements on the periodic table based on atomic number

A

Henry Mosley flash cards

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13
Q

38. Solid Sphere model; elements are atoms with different masses

A

Dalton flash cards

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14
Q

39. Electron Cloud model; surrounding the nucleus is an electron cloud made of shells

A

Shridinger and Heisenberg flash cards

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15
Q

40. Nuclear Model; gold foil experiment allowed him to discover that the nucleus was the psotitively charged center of the atom

A

Ernest Rutherford flash cards

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16
Q

41. Arranged the elements on the periodic table based on atomic mass

A

Dmitri Mendeleev

17
Q

43. Electrons travel in fixed orbits around the nucleus of the atom

A

Niels Bohr

18
Q

44. Named the atom based on the Greek word meaning indivisible

A

Democritus

19
Q

45. List three elements from the group containing the most reactive non-metals

A

Fluorine, Chlorine, and Bromine. Pg.16

20
Q

52. Use the following clues and the periodic table to determine the identity of each element described below

A

Fluorine, radon, magnesium, bromine pg.16