Ch 2 Review Quizizz

Who proposed the first modern atomic theory stating that atoms are indivisible and indestructible?

• J.J. Thomson

• John Dalton

• Ernest Rutherford

• Niels Bohr

Which scientist discovered the electron using the cathode ray tube?

• Rutherford

• Bohr

• Thomson

• Mendeleev

Ernest Rutherford's gold foil experiment led to the discovery of:

• Electrons

• Protons

• The atomic nucleus

• Neutrons

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

What is the charge and location of a proton?

• Neutral, nucleus

• Positive, nucleus

• Negative, electron cloud

• Positive, electron cloud

Which of the following best describes isotopes?

• Atoms with the same number of protons and neutrons

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with the same number of neutrons but different numbers of protons

• Atoms with different numbers of protons and electrons

An atom has 6 protons, 7 neutrons, and 6 electrons. What is its mass number?

• 6

• 7

• 13

• 19

Elements in the same group (column) of the periodic table have:

• Similar atomic masses

• The same number of protons

• Similar chemical properties

• The same number of neutrons

What happens to an atom when it becomes a positive ion (cation)?

• Gains protons

• Gains electrons

• Loses electrons

• Loses neutrons

What is the empirical formula of a compound that has a molecular formula of C₆H₁₂O₆?

• C₆H₁₂O₆

• C₃H₆O₃

• CH₂O

• C₂H₄O₂