Quarter 1 test review

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

• Democritus

• Thomson

• Bohr

• Dalton

Proposed that electrons move around the nucleus in specific layers, or shells.

• Bohr

• Rutherford

• Chadwick

• Thomson

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

• Atom is mostly empty space

• The nucleus is positively charged

• The atom has a small dense nucleus

• All answers are correct

He discovered electrons

• J.J. Thomson

• John Dalton

• Ernest Rutherford

• Niels Bohr

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

What is an ion?

• A Charged Atom
• A Large Atom
• A Small Atom
• A Cute Atom

An atom becomes _______ when it loses electrons.

• Positive
• Negative
• Neutral
• Invinsible

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

What is the charge of an atom with 5 protons, 5 neutrons, and 7 electrons?

• 0

• +5

• +2

• -2

If an element contains 13 protons and 12 electrons what would be its overall charge?

• +1

• -1

• +13

• -13