Plum Pudding Flashcards Preview

GSHS Physics Additional > Plum Pudding > Flashcards

Flashcards in Plum Pudding Deck (8)
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1
Q

What is the old model called?

A

Plum Pudding Model

2
Q

What did the old model suggest?

A

That the atom was a ball of positive charge, with electrons scattered inside

3
Q

How did Rutherford carry out the experiment?

A

Fired alpha particles at thin, gold foil in a vacuum

4
Q

What were the results of Rutherford’s experiment?

A

Most alpha particles passed through the atom meaning the atom is mostly empty space

Very rarely one bounced back (deflects)

5
Q

What did Rutherford conclude from the experiment?

A

Because one rarely bounced back, the nucleus of the atom is small and dense

6
Q

What is the name of the new model?

A

Nuclear model

7
Q

Why do the alpha particles bounce back and not stick together?

A

Because they have a charge of +2, instead of being positive and negative (+1 and -1)

8
Q

Who carried out the experiment?

A

Rutherford