The idea of the atom has developed over time. What was thought of as a single particle is now known to be a collection of smaller particles, called protons, neutrons
Which one of these does the plum pudding model suggest that most of the atom is made from?
What was the surname of the scientist who suggested the plum pudding model?
What does the fact that most alpha particles go straight through gold foil in Rutherford’s experiment signify?
There is a concentration of mass in the atom
The atom is mostly space
There is a concentration of charge in the atom
Which particle did Rutherford’s scattering experiment prove existed?
How many times bigger is the atom compared to the nucleus?
What did Niels Bohr add to the Rutherford atomic model?
In the current model of the atom, what are the two particles that are present in the nucleus?
Protons and electrons
Protons and neutrons
Neutrons and electrons
What does the mass number signify in atomic notation?
The number of protons in the nucleus
The number of neutrons in the nucleus
The number of protons and neutrons in the nucleus
What do isotopes of the same element have in common?
The same number of protons and the same number of neutrons
The same number of protons but a different number of neutrons
A different number of protons but the same number of neutrons
What will a neutral atom become if it loses an electron?
The atom will become a positively charged ion
The atom will become a negatively charged ion
The atom will stay neutral