5-1 Atom Basics

Which subatomic particle causes the nucleus to have a positive charge?

• Neutron
• Electrons
• Protons
• Valence electrons

The electron cloud is the home of the (a)   .

• proton
• electron

Where is the proton located?

• In the very dense nucleus
• Floating around in the negative electron cloud
• the loose nucleus
• the positive electron cloud

Tags

NGSS.MS-PS1-1

The mass of one proton is equal to the mass of one (a)   .

• neutron
• electron

Which is a neutron?

• A
• B
• C

Which particles make up the nucleus of an atom?

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

Tags

NGSS.MS-PS1-1

What did Thomson call his model of the atom?

• The electronegativity model

• The plum pudding model

• The Thomson model

• The cathode ray model

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

Who stated that all atoms of the same element are exactly alike?

• Democritus

• Dalton

• Thomson

• Bohr

(a)   discovered the electron within the atom.

• Thomson

• Chadwick

• Schrodinger & Heisenberg

• Dalton