Question

1. choose all that apply.

which three facts are about rutherfords model?
consists of a dense, positively charged core called a nucleus
positively charged electrons orbiting the nucleus
negatively charged electrons orbiting the nucleus
mostly empty space surrounding the nucleus
no subatomic particles
consists of a group of negatively charged electrons in the center of the atom

1. order the experiments and theories about an atoms structure from oldest to newest.

gold foil experiment
crookes tube experiment
plum pudding model

Explanation:

Rutherford's model has a dense, positively - charged nucleus. Electrons are negatively charged and orbit the nucleus. The atom has mostly empty space around the nucleus. Electrons are negatively charged (not positively), and atoms have subatomic particles (nucleus with protons and neutrons, electrons). The center of the atom has the nucleus (positively charged), not a group of negatively - charged electrons.

For the ordering:

• The Crookes tube experiment (late 19th century) led to the discovery of cathode rays (electrons).
• The plum - pudding model (J.J. Thomson, 1904) was proposed after the discovery of electrons.
• The gold - foil experiment (Rutherford, 1911) led to the nuclear model.

Answer:

For question 9:

• consists of a dense, positively charged core called a nucleus
• negatively charged electrons orbiting the nucleus
• mostly empty space surrounding the nucleus

For question 10:

• Crookes tube experiment
• plum pudding model
• gold foil experiment