Chem-Chapter 4&5

What is a positively charged subatomic particle called _______.

• proton

• electron

• neutron

What is a negatively charged subatomic particle called _______.

• proton

• electron

• neutron

What is a subatomic particle that has no charge called _________.

• proton

• electron

• neutron

Which Scientist discovered electrons?

• Bohr

• Thomson

• Dalton

Which Scientist had the first atomic theory with scientific evidence?

• Dalton

• Thomson

• Rutherford

Which Scientist stated that electrons orbit the nucleus, like planets orbit the sun?

• Democritus

• Bohr

• Rutherford

Which Scientist is credited with naming the atom?

• Bohr

• Thomson

• Democritus

Which Scientist stated that the atom was mostly empty space?

• Rutherford

• Dalton

• Bohr

What is the smallest particle of an element that has the properties of the element called ___________.

• proton

• cell

• atom

What is the central part of the atom, containing protons and neutrons called ___________.

• mass number

• nucleus

• electron