Chemistry Pages 84-98

Discovered the positively charged particles and called them protons

• J.J. Thomson
• Ernest Rutherford
• James Chadwick

Protons have a _________ charge.

Like charges ________.

• attract

• repel

Who developed the cathode ray tube?

• William Crookes

• J.J. Thomson

• Ernest Rutherford

__________ have a negative charge.

Who started the idea that the ray’s were electrically charged?

• Ernest Rutherford

• J.J. Thomson

• Neils Bohr

• William Crookes

Neutrons have a ___________ charge.

Discovered the neutral particles and called them neutrons

• J.J. Thomson
• Ernest Rutherford
• James Chadwick

Opposite charges __________.

• attract

• repel

Every substance on earth has electrical charges.

• True

• False