WW2: ATOMIC THEORY 7 STRUCTURE

Question 1

The electron has very little mass compared to the ____ or ____.

Answer 1

protons, neutron

Question 2

The mass of the atom depends on the nucleus and how many ___ and ___ it has.

Answer 2

protons/electrons, neutrons

Question 3

The sum of the protons and neutrons is the mass ___ of an atom.

Answer 3

number

Question 4

The number of neutrons in an atom can be found by subtracting the atomic number from the ____ number.

Answer 4

mass

Question 5

The mass of the atom is so small that there is a measure called the atomic ___ unit designated by amu.

Answer 5

mass

Question 6

____ and ___ make up the nucleus and are made up of ___.

Answer 6

protons, neutrons, *QUARKS

Question 7

There are ____ uniquely different quarks. ___ are found in an area around the nucleus called the ____.

Answer 7

six, ELECTRONS, electron cloud

Question 8

The nuclei of all atoms of a given element always have the same number of ____. They will also have the same number of ____ around the nucleus.

Answer 8

protons, electrons

Question 9

Some atoms may have more or fewer ___ than will other atoms of the same element.

Answer 9

neutrons

Question 10

Atoms of the same element with different numbers of neutrons are called _____.

Answer 10

isotopes

Question 11

Every atom of carbon must contain ____ but some contain six neutrons and others have eight neutrons.

Answer 11

six PROTONS