Isotopes and the Pioneer of Radioactivity

"The number of protons is an element's or an isotope's atomic number."

• True

• False

"The mass of electrons does NOT contribute much to an element's or an isotope's mass number."

• True

• False

"Atoms of the SAME elements have fixed number of protons."

• True

• False

"Between the number of protons and the number of neutrons, the former is causing the change in the mass number of isotopes."

• True

• False

"An element's different isotopes have different chemical properties."

• True

• False

"Marie Curie was originally from France."

• True

• False

"Most of Marie Curie's academic and professional life was spent in Poland."

• True

• False

"It was Marie Curie who discovered that uranium emitted X-rays."

• True

• False

"The scientific work on radioactivity proved that atoms are in fact divisible or desctructible."

• True

• False

"Marie Curie's pioneering work on radioactivity led to her achievement as a woman in an era and field dominated by men; and to her blindness and death."

• True

• False