Atom Quiz Practice

explained that the atom has a positively charged center and negatively charged electrons are randomly around it.

• Dalton & Democritus

• Bohr

• Rutherford

• Thomson

• Modern Theory

Tags

NGSS.MS-PS1-1

found electrons and called his model plum pudding

• Dalton & Democritus

• Bohr

• Rutherford

• Thomson

• Modern Theory

believed the atom was the smallest

• Dalton & Democritus

• Bohr

• Rutherford

• Thomson

• Modern Theory

said electrons travel in a definite path

• Dalton & Democritus

• Bohr

• Rutherford

• Thomson

• Modern Theory

said electrons can be found in electron clouds

• Dalton & Democritus

• Bohr

• Rutherford

• Thomson

• Modern Theory

Where is most of the mass of an atom?

• proton

• neutron

• nucleus

• electron

positively charged

• proton

• neutron

• nucleus

• electron

negatively charged

• proton

• neutron

• nucleus

• electron

Tags

NGSS.MS-PS2-3

neutral

• proton

• neutron

• nucleus

• electron

smallest particle an element can be divided

• quarks

• isotope

• electron cloud

• atom

• subatomic particles