Physical Science

Physical Science

Atoms

Atoms

• atoms are the smallest units of matter

• the word a-tom means not divisible

3 Parts of an atom

• Atoms have a neutron that is neutral and found in the nucleus

• Atoms have a proton that is positive and found in the nucleus

• Atoms have a tiny electron that is negative and is found outside the nucleus

Multiple Choice

How many parts does an atom have?

• 0

• 1

• 2

• 3

Multiple Choice

Who discovered the electron and created the "chocolate chip" cookie mode of the atom?

• Democritus

• Dalton

• Thompson

Multiple Choice

Who thought matter was made of Particles that he called atoms?

• Democritus

• Dalton

• Thompson

Multiple Choice

Who thought matter made of atoms that make up elements?

• Democritus

• Dalton

• Thompson

Multiple Choice

What did Rutherford discover?

• atoms are mostly empty space with a few electrons outside of a nucleus

• atoms have no empty space and the electrons are in the nucleus

Multiple Choice

What did Niels Bohr discover?

• electrons can be anywhere outside the nucleus

• Electrons orbit the nucleus in fixed areas