Unit 1 Written

Question 1

<p><span>LO 10</span></p>

Answer 1

<p><span>Nucleus</span></p>

Question 2

Answer 2

<p><span>Halogens</span></p>

Question 3

<p><span>LO 10</span></p>

Answer 3

<p><span>The repulsion of the positively charged nucleus</span></p>

Question 4

<p><span>LO 12 & 13</span></p>

Answer 4

Question 5

<p><span>LO 16</span></p>

Answer 5

<p><span>14.5</span></p>

Question 6

<p><span>LO 20</span></p>

Answer 6

<p><span>Trigonal pyramidal</span></p>

Question 7

<p><span>LO 11</span></p>

Answer 7

Question 8

<p><span>LO 14</span></p>

Answer 8

<p><span>Isotopes</span></p>

Question 9

<p><span>LO 14</span></p>

Answer 9

<p><span>Different numbers of neutrons</span></p>

Question 10

<p><span>LO 16</span></p>

Answer 10

<p><span>36</span></p>

Question 11

<p><span>LO 20</span></p>

Answer 11

<p><span>Tetrahedral</span></p>

Question 12

<p><span>LO 14</span></p>

Answer 12

Question 13

<p><span>LO 12 & 15a</span></p>

Answer 13

Question 14

<p><span>LO 6&7</span></p>

Answer 14

<p><span>Same group</span></p>

<p><span>Same number of outer electrons</span></p>

Question 15

<p><span>LO 16</span></p>

Question 16

<p><span>LO 15a; 12 & 13</span></p>

Answer 16

Question 17

<p><span>LO 15; 12 & 13</span></p>

Answer 17

Question 18

<p><span>LO 16</span></p>

Answer 18

Question 19

<p><span>LO 12</span></p>

Answer 19

Question 20

<p><span>LO 15a; 12 & 13</span></p>

Answer 20

Question 21

<p><span>LO 9</span></p>

Answer 21

Question 22

<p><span>LO 10</span></p>

Answer 22

<p><span>Nucleus</span></p>

Question 23

<p><span>LO 11 & 13</span></p>

Answer 23

<p><span>7</span></p>

<p><span>(There are 3 protons + 4 neutrons in nucleus)</span></p>

Question 24

<p><span>LO 7 & group names</span></p>

Answer 24

<p><span>Alkali metals</span></p>

<p><span>( one outer electron = group 1; group 1 are called the alkali metals)</span></p>

Question 25

<p><span>LO 14</span></p>

Answer 25

<p><span>Isotopes</span></p>

Question 26

<p><span>LO 15a; 12 & 13</span></p>

Answer 26