PS Chapter 17

Question 1

atom

Answer 1

smallest piece of an element

Question 2

nucleus

Answer 2

very tiny, very dense center of an atom

Question 3

proton

Answer 3

positively charged particle that makes up atoms

Question 4

electron

Answer 4

negatively charged particle that makes up atoms

Question 5

neutron

Answer 5

neutral particle that makes up atoms

Question 6

quarks

Answer 6

particles that make up protons and neutrons

Question 7

electron cloud

Answer 7

area surrounding the nucleus where the electrons are located

Question 8

smallest piece of an element

Answer 8

atom

Question 9

very tiny, very dense center of an atom

Answer 9

nucleus

Question 10

positively charged particle that makes up atoms

Answer 10

protons

Question 11

negatively charged particle that makes up atoms

Answer 11

electrons

Question 12

neutral particle that makes up atoms

Answer 12

neutrons

Question 13

particles that make up protons and neutrons

Answer 13

quarks

Question 14

area with electrons that surrounds the nucleus

Answer 14

electron cloud

Question 15

atomic number

Answer 15

number of protons in an atom

Question 16

mass number

Answer 16

mass of a single atom which is equal to the protons plus the neutrons

Question 17

isotopes

Answer 17

atoms of the same element with different mass numbers

Question 18

average atomic mass

Answer 18

weighted average of the masses of all of the isotopes of an element

Question 19

number of protons in an atom

Answer 19

atomic number

Question 20

mass of a single atom which is equal to the protons plus the neutrons

Answer 20

mass number

Question 21

atoms of the same element with different mass numbers

Answer 21

isotopes

Question 22

weighted average of the masses of all of the isotopes of an element

Answer 22

average atomic mass

Question 23

periodic table

Answer 23

table of all known elements in order of increasing atomic number

Question 24

group

Answer 24

a column on the periodic table

Question 25

period

Answer 25

a row on the periodic table

Question 26

table of all known elements in order of increasing atomic number

Answer 26

periodic table

Question 27

a column on the periodic table

Answer 27

group

Question 28

a row on the periodic table

Answer 28

period