Atoms

The word “atom” comes from the Greek “atomos” meaning …

• Invisible
• Tiny
• Indivisible
• Indestructable

Who said that all matter was made of earth, fire, wind and water?

• Democritus
• Dalton
• Artisotle
• Leucipus

John Dalton’s atomic idea is a scientific theory because he …

• He is a smart guy
• He did experiments
• He is a scientist
• He made observations

Dalton’s atomic theory says that all atoms of one element are the same. 

• True
• False

In a chemical reaction, atoms can NEVER…

• Change into a different atom
• Combine with a different atom
• Change places with a different atom
• Separate from another atom

Lavoisier discovered that...

• All masses stay the same, regardless of shape or form
• Masses can change in different states
• Masses get bigger
• Masses get smaller

Dalton proposed the

• snooker model of the atom
• billiard ball model of the atom
• pool model of the atom
• the ball model of the atom

Thomson proposed the

• christmas pudding model
• apple pie model
• plum pudding model
• apple pudding model

Rutherford proposed that the model had

• a negative nucleus surrounded with positive electrons
• a neutral nucleus surrounded with negative electrons
• a positive nucleus surrounded with negative electrons
• a neutral nucleus surrounded with positive electrons

Rutherford used what type of particles to confirm his theory

• beta
• gamma
• theta
• alpha