Chemistry _Nine week Test 2

alpha - particle scattering experiment was done by......?

• JJ Thomson

• Neil Bohr

• Ernest Rutherford

• J. Chadwick

Who proposed the plum pudding model?

• Ernest Rutherford

• JJ Thomson

• Neils Bohr

• JJ Thonson

What subatomic particle has a negative charge and is found outside of the nucleus?

• Electron

• Proton

• Nucleus

• Neutron

What is the name of this model?

• Bohr Model

• Rutherford Model

• Electron Cloud Model

• Dalton Model

What number on the element key tells you how many protons an element has?

• Atomic Mass
• Element name
• Atomic number
• Element Symbol

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

Elements can have the same number of protons?

• True
• False

The following element key shows how many protons?

• 16
• 15.999
• Oxygen
• 8

What is the formula to solve for the neutron?

• Mass + Atomic Number= Neutrons
• Mass x Atomic Number = Neutrons
• Mass - Atomic Number = Neutrons
• Mass + Number of Protons = Neutron

In an atom, what is the number of protons equal to?

• The number of electrons.
• The number of neutrons.
• The number of molecules.
• The number of nuclei.