Physices

Question 1

What did JJ Thomson discover about the atom

Answer 1

that it wasn’t a solid sphere and electrons

Question 2

Who created the plum pudding model

Answer 2

JJ Thomson

Question 3

What did Ernest Rutherford discover about the atom

Answer 3

Nucleus was very small and has a positive charge and atom is mostly empty space

Question 4

Who did the gold foil experiment with Ernest Rutherford

Answer 4

Geiger and Marsden

Question 5

What did Niels Bohr discover about the atom

Answer 5

electron shells

Question 6

What’s the size of the atom

Answer 6

1 × 10 to the power of -10

Question 7

What’s the size of the nucleus

Answer 7

1x10 to the power of -23

Question 8

Relative mass of proton

Answer 8

1

Question 9

Relative mass of neutron

Answer 9

1

Question 10

Relative mass of electron

Answer 10

so small we count it as 0

Question 11

Relative charge of proton

Answer 11

1

Question 12

Relative charge of neutron

Answer 12

0

Question 13

Relative charge of electron

Answer 13

-1

Question 14

What’s a molecule

Answer 14

a group of atoms bonded together

Question 15

Formula for density

Answer 15

density = mass / volume