Democritus' idea of atoms

Who first proposed the concept of atom and believed that the atom can no longer be divided, that each atom has a different size and shape?

• Dalton

• Democritus

• Ancient Greeks

• Rutherford

Democritus proposed that 'atomos' are ______________.

• Incompressible

• Indestructible

• Indivisible

• All of the above

Tags

NGSS.HS-PS1-7

According to Democritus, atoms are ______________.

• too small to see

• indestructible

• unable to be subdivided

• all of the above

Tags

NGSS.HS-PS1-7

What happened to Democritus' idea about atoms?

• They were ridiculed by Aristotle

• They were wildly accepted in his lifetime

• They were almost forgotten for more than 2000 years

• Two of the above

His ideas were based on experimental evidence.

• True

• False

Tags

NGSS.HS-LS1-6

NGSS.HS-PS1-2

He thought that atoms are motionless.

• True

• False

Tags

NGSS.MS-PS1-4

Democritus thought that atoms are separated from each other by empty space.

• True

• False

Democritus wondered what would happen if you cut a chunk of matter into smaller and smaller pieces. He thought that a point would be reached at which the matter could not be cut into still smaller pieces.

• True

• False

Tags

NGSS.MS-PS1-1