Atomic Theory and Scientific Method

Question 1

This experiment showed that electrons were negatively charged.

Accepted Answer

Cathode ray experiment

Question 2

A scientific law...

Accepted Answer

Describes relationships between phenomena, often a formula

Question 3

Which of the following parts of Dalton's atomic theory is now known to be false?

Accepted Answer

All atoms of the same kind are identical

Question 4

Thestar closest to Earth is moving away from Earth at high speed.

Accepted Answer

Observation

Question 5

Can theories ever change or be disproven?

Accepted Answer

Yes- if new evidence comes along that warrants the change

Question 6

What do you do when your data proves your hypothesis incorrect?

Accepted Answer

Revise your hypothesis and run another experiment

Question 7

The mass of products of a reaction always equals the mass of the reactants.

Accepted Answer

Law

Question 8

This showed that atoms were mostly empty space but sometimes alpha particles were deflected

Accepted Answer

Gold foil experiment

Question 9

Theuniverse began as a cosmic explosion called the Big Bang.

Accepted Answer

Theory

Question 10

There are 4 red M & M's in a certain bag.

Accepted Answer

Observation

Question 11

The amount of greasy food a person eats has no effect on how much acne they have.

Accepted Answer

Hypothesis

Question 12

A body in motion stays in motion unless acted upon by a force.

Accepted Answer

Law

Questions 12