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Which subatomic particle has a negative charge in the atom?

• proton
• neutron
• electron
• quark

According to Thomson's Atomic Model, how is an atom as a whole neutral?

• The atom is neutrally charged with protons implanted in a negatively charged sphere.

• The atom is neutrally charged with electrons implanted in a positively charged sphere.

• The atom is negatively charged with protons randomly inserted.

• The atom is positively charged with electrons randomly inserted.

What caused Dalton's atomic theory to fail?

• Discovery of protons and neutrons inside the atom.

• Discovery of neutrons and electrons inside the atom.

• Discovery of electrons and protons inside the atom.

• Discovery of electrons and protons inside the atom.

Was J.J. Thomson the first to discover the atomic nucleus?

• Yes, he discovered the atomic nucleus.

• Yes, he discovered the electron.

• No, another scientist discovered the atomic nucleus.

• No, he discovered the proton.

What is the atomic nucleus made up of?

• Neutrons and positrons.

• Protons and electrons.

• Neutrons and electrons.

• Protons and neutrons.

What is the atomic nucleus?

• A large, empty space in the atom.

• A region where electrons revolve around protons.

• A region where neutrons revolve around electrons.

• A small, dense region made up of protons and electrons.

What did Thomson's atomic model describe the atom as?

• A fruit salad with electrons floating around.

• A chocolate cake with electrons embedded in a negative sphere.

• A plum pudding with electrons studded in a positive sphere.

• A watermelon with electrons dispersed throughout.

What did Thomson's model fail to explain?

• The distribution of electrons in the atom.

• The presence of a nucleus in the atom.

• The stability of the atom.

• The scattering of alpha particles in Rutherford's experiment.