Atomic structure ( checklist)

Question 1

what is an atom

Answer 1

The smallest particle of an element that contains electrons surrounding a nucleus containing protons and neutrons

Question 2

what is a molecule

Answer 2

more than one atom chemically bonded together

Question 3

example of a molecule (oxygen)

Answer 3

O₂

Question 4

example of atom (oxygen)

Answer 4

O

Question 5

protons are found in the

Answer 5

nucleus

Question 6

neutron is found in the

Answer 6

nucleus

Question 7

electrons are found in the

Answer 7

shells

Question 8

protons have a relative atomic mass of

Answer 8

1

Question 9

electrons have a relative atomic mass of

Answer 9

1/ 1840

Question 10

neutrons have a relative atomic mass of

Answer 10

1

Question 11

protons have a charge of

Answer 11

+1

Question 12

electrons have a charge of

Answer 12

-1

Question 13

neutrons have a charge of

Answer 13

0

Question 14

atomic number is the

Answer 14

number of protons in the atom

Question 15

mass number is the

Answer 15

The number of protons and neutrons in the nucleus of an atom

Question 16

an isotope is

Answer 16

an atom with the same number of protons but different number of neutrons

Question 17

to find the amount of neutrons in an element, you

Answer 17

mass number - atomic number

Question 18

to find the number of electrons in an element, you

Answer 18

look at the atomic number

Question 19

the mass number is the ___ number on the periodic table

Answer 19

bigger

Question 20

the atomic number is the ___ number on the periodic table

Answer 20

smaller

Question 21

relative atomic mass is

Answer 21

The average mass of one atom of an element,

Question 22

how do you calculate relative atomic mass (Ar)

Answer 22

Ar = (% of isotope A x mass of isotope A) + (% of isotope B × mass of isotope B) / 100