Question 1

35 amu add 17 proton and 18 neutrons together

Accepted Answer

If an atom has 17 protons, 18 neutrons, and 17 electrons, what is the mass of this atom? _______

Question 2

p+ and n 0

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Which two subatomic particles contribute the most to the mass of an atom? _____________________________

Question 3

electron - proton + neutron 0

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What is the charge of the electron: ____ the neutron: ________ and the proton: _________

Question 4

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How do valence electrons differ from other electrons in an atom?

Question 5

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A They are the negatively charged electrons in the atom.

Question 6

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B They are the positively charged electrons in the atom.

Question 7

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C They are only in the outermost energy level of the atom.

Question 8

C They are only in the outermost energy level of the atom.

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D They are only in the innermost energy level of the atom.

Question 9

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How can an element be identified? (Choose 2)

Question 10

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I. By its atomic number

Question 11

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II. By its atomic mass

Question 12

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III. By the number of protons in an atom of the element

Question 13

I and III

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IV. By the number of protons and neutrons in an atom of the element

Question 14

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I. By its atomic number AND

Question 15

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III. By the number of protons in an atom of the element

Question 16

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Use your periodic table to determine which of the elements in the chart provided is not a metal?

Question 17

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Element A = 32

Question 18

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Element B = 27

Question 19

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Element C = 11

Question 20

Element A = 32 metalloid

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Element D = 50

Question 21

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Element B = 27 metal

Question 22

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Element C = 11 metal

Question 23

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Element D = 50 metal

Question 24

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Use your periodic table to determine which of the following elements is in the same group as Calcium?

Question 25

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A. Beryllium

Question 26

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B. Krypton

Question 27

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C. Potassium

Question 28

Beryllium

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D. Hydrogen

Question 29

Family or Group

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The columns that go up and down on the Periodic Table are called: _________

Question 30

Bromine

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What is the elemental symbol of the element found in Group 17, Period 4 of the Periodic Table? ___________________

Question 31

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Which of the following sequences of elements would all have four valence electrons?

Question 32

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A Li, Be, B, C

Question 33

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B Be, Mg, Ca, Sr

Question 34

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C K, Ca, Sc, Ti

Question 35

D C, Si, Ge, Sn

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D C, Si, Ge, Sn

Question 36

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The diagram below represents part of the Periodic Table. Which pair of elements have the same number of valence electrons and would react similarly?

Question 37

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13

Question 38

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B

Question 39

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10.811

Question 40

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Question 41

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14

Question 42

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C

Question 43

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12.011

Question 44

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Question 45

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13

Question 46

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Al

Question 47

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29.9815

Question 48

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Question 49

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14

Question 50

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Si

Question 51

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28.0855

Question 52

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Question 53

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A Boron (B) and Carbon (C)

Question 54

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B Carbon (C) and Aluminum (Al)

Question 55

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C Boron (B) and Aluminum (Al)

Question 56

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D Aluminum (Al) and Silicon (Si)

Question 57

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Question 58

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Hint: Family /Group = same number of valence electrons (up and down)

Question 59

C Boron (B) and Aluminum (Al)

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Periods = energy levels (left to right)

Question 60

F

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Write out the triangle and the formulas for F=ma

Question 61

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--------

Question 62

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M x A

Question 63

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Joseph is having a difficult time moving his sofa across the living room. He decides to place wheels on the legs of the sofa to make it easier. Which of the following forces is Joseph overcoming?

Question 64

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Accepted Answer

A. Gravity

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