Ch 3 & 4 Review

Question 1

lead has an atomic number of 82. How many protons and electrons does lead have?

Answer 1

82

Question 2

Oxygen has 8 electrons. How many protons does it have?

Answer 2

8

Question 3

where are protons located?

Answer 3

outside the nucleus

Question 4

where are neutrons located?

Answer 4

in the nucleus

Question 5

where are electrons located?

Answer 5

outside the nucleus

Question 6

what is the symbol for protons?

Answer 6

p+

Question 7

what is the symbol for neutrons?

Answer 7

n0

Question 8

what is the symbol for electrons?

Answer 8

e-

Question 9

what is the relative mass for protons?

Answer 9

1

Question 10

what is the relative mass for electrons

Answer 10

0

Question 11

what is the relative mass for neutrons

Answer 11

1

Question 12

when atoms lose or gain _____ they become ions

Answer 12

electrons

Question 13

valence electrons

Answer 13

the electrons in the highest or outermost energy level

Question 14

how many electrons can the first shell hold?

Answer 14

2

Question 15

how many electrons can the second shell hold?

Answer 15

8

Question 16

how many electrons can the third shell hold?

Answer 16

8

Question 17

metals are always ________

Answer 17

cations

Question 18

nonmetals are always _______

Answer 18

anions

Question 19

cesium ______ ___ electron(s) to become a cesium ion

Answer 19

loses 1

Question 20

Phosphorus ______ ___ electron(s) to become a phosphorus ion

Answer 20

gains 3

Question 21

how many valence electrons are in magnesium

Answer 21

2

Question 22

how many valence electrons are in boron

Answer 22

3

Question 23

how many valence electrons are in neon

Answer 23

8

Question 24

Who was given credit for the Periodic Table?

Answer 24

Dmitri Mendeleev

Question 25

What was the periodic table based off of?

Answer 25

increasing masses and similar chemical properties

Question 26

What is group 1 of the periodic table called?

Answer 26

alkali metals

Question 27

What is group 2 of the periodic table called?

Answer 27

alkaline earth metals

Question 28

What is group 3 to 12 of the periodic table called?

Answer 28

transition metals

Question 29

What is group 17 of the periodic table called?

Answer 29

halogens

Question 30

What is group 18 of the periodic table called?

Answer 30

noble gases

Question 31

families of the periodic table go __________

Answer 31

up and down

Question 32

periods of the periodic table go ______

Answer 32

across

Question 33

Reactivity in the alkali metals _______ as we go down

Answer 33

increases

Question 34

halogens are highly reactive with ______-

Answer 34

alkali metals

Question 35

halogen reactivity ________ as we go down

Answer 35

decreases

Question 36

True or False Noble gases are completely non reactive

Answer 36

true

Question 37

true or false fluorine is the most reactive halogen

Answer 37

true