Atomic Theory - Do Now and Agenda

What do you know about Atoms? List at least two (2) things you know about atoms.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-8

What title should you write across the next available left and right pages in your notebook?

What are the three main subatomic particles labeled in the atom diagram?

Tags

NGSS.HS-PS1-8

True or False: The understanding of atoms has remained unchanged since it was first discovered.

• True

• False

According to the text, what will be discussed today regarding atomic theory?

Who was the first person to think about an atom's existence?

• A) Aristotle

• B) Democritus

• C) Plato

• D) Socrates

Democritus believed that atoms were uniform, solid, hard, incompressible, and indestructible.

• True

• False

According to Democritus, what determined the properties of matter?

• The color of atoms

• The atomic shape and size

• The temperature

• The atomic number

Fill in the blank: Democritus believed that atoms moved in ________ numbers through empty space until stopped.

Did Democritus have experimental evidence to support his ideas?