Atomic History and Structure

The atomic number will always be the same as

• Mass number and number of protons

• Number of neutrons and protons

• number of electrons and protons

• Number of electrons and neutrons

The periodic table is in order by the

• Mass number

• Neutron number

• Atomic number

• APE MAN Number

The smallest subatomic particle is the

• proton

• neutron

• electron

• decepticon

How many protons does indium have?

• 49

• 66

• 114

• 115

Which part of an atom is used to identify it?

• number of protons

• number of neutrons

• number of electrons

The atomic mass of an atom is equal to

• number of protons plus number of neutrons

• number of protons plus number of electrons

• number of electrons plus the number of neutrons

Tags

NGSS.MS-PS1-1

What two subatomic particles must be equal for an atom to have no charge (neutral).

• protons and neutrons

• protons and electrons

• electrons and neutrons

What is the atomic mass of barium

• 56

• 82

• 137

• 138

How many neutrons does platinum have?

• 78

• 117

• 195

• 196

Who's model is this?

• Thomson

• Rutherford

• Democritus

• Bohr

Tags

NGSS.MS-PS1-1