Atomic Theory Quiz

Which Quaker teacher challenged Aristotelian theory and showed that substances always break down into the same elements?

• Aristotle

• Democritus

• John Dalton

• J.J. Thompson

Who discovered the electron in 1897?

• Aristotle

• Democritus

• John Dalton

• J.J. Thompson

What did J.J. Thompson's model of the atom propose?

• Atoms are made up of tiny particles surrounded by empty space

• Atoms consist of a nucleus with electrons orbiting around it

• Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

• Atoms consist largely of empty space with a dense, positively charged nucleus

Who conducted the gold foil experiment and concluded that atoms consist largely of empty space with a dense nucleus?

• Aristotle

• Democritus

• John Dalton

• Ernest Rutherford

What did Niels Bohr's model of the atom propose?

• Atoms are made up of tiny particles surrounded by empty space

• Atoms consist of a nucleus with electrons orbiting around it

• Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

• Atoms consist largely of empty space with a dense, positively charged nucleus

Who showed that electrons behave like waves and formulated the uncertainty principle?

• Max Planck

• Albert Einstein

• Werner Heisenberg

• Niels Bohr

According to Democritus, what do the particles vary in?

• Size and shape

• Energy levels

• Mass and charge

• Speed and position

What did John Dalton conclude about compounds?

• They are combinations of atoms of different elements

• They are made up of tiny particles surrounded by empty space

• They consist of a nucleus with electrons orbiting around it

• They cannot be pinpointed but exist within a range of possible locations

What did J.J. Thompson's model of the atom propose about the composition of atoms?

• Atoms are made up of tiny particles surrounded by empty space

• Atoms consist of a nucleus with electrons orbiting around it

• Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

• Atoms consist largely of empty space with a dense, positively charged nucleus

What did Ernest Rutherford's gold foil experiment suggest about the structure of atoms?

• Atoms are made up of tiny particles surrounded by empty space

• Atoms consist of a nucleus with electrons orbiting around it

• Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

• Atoms consist largely of empty space with a dense, positively charged nucleus