Unit 2 Test

Question 1

how many valence electrons does ALUMINUM have

Answer 1

3

Question 2

how many electrons are in outermost shell of CALCIUM

Answer 2

2

Question 3

In the modern periodic table, the elements are arranged in order of increasing?

Answer 3

atomic number

Question 4

How many electrons are in the outermost shell of ARGON

Answer 4

8

Question 5

How many electrons are in the outermost of NITROGEN

Answer 5

5

Question 6

How many valence electrons does P have?

Answer 6

5

Question 7

state of matter that has definite volume + shape?

Answer 7

solid

Question 8

two subatomic particles that have the same mass?

Answer 8

protons + electrons

Question 9

most elements are

Answer 9

metals

Question 10

vertical columns are called what

Answer 10

groups

Question 11

which substance is least dense

Answer 11

cork/ the closest one to the top

Question 12

horizontal rows on the periodic table

Answer 12

periods

Question 13

Lithium’s atomic number is 3/ atomic mass of 6.941, how many electrons does it have

Answer 13

3, look at atomic number

Question 14

what state of matter has definite volume but no definite shape

Answer 14

liquid

Question 15

density of 150cm3 with 700g of mass/round to 10

Answer 15

4.7 g/cm3

Question 16

neutral charge and relatively the same as a proton

Answer 16

neutron

Question 17

each element on the periodic table has its own what

Answer 17

atomic number

Question 18

negatively charged electron cloud surrounding a positively charged describes what

Answer 18

atomic structure

Question 19

which substance particle is farthest from the nucleus

Answer 19

electron

Question 20

if an atom looked like a dartboard, where is the center at

Answer 20

bullseye

Question 21

two simple substances combined chemically

Answer 21

compound

Question 22

total number of neutrons in a neutral atom that has 19 electrons and a mass number of 39 ( subtract )

Answer 22

20

Question 23

how many protons are in a neutral atom with an atomic number of 11 and an atomic mass of 23

Answer 23

11

Question 24

Boron has an atomic mass of 10.811 and an atomic number of 5, how many neutrons/round

Answer 24

6

Question 25

Which substance contains atoms that are electrically neutral

Answer 25

potassium