Atoms and atomic timeline

All matter is made of what?

• energy

• atoms

• electrons

• compounds

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

The central region of an atom where neutrons and protons are located

• nucleus

• electron cloud

• core

• center

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

The overall charge of an atom is

• positive

• depends on its mood

• neutral

• negative

Which of the following is a negatively charged subatomic particle?

• Electron
• Proton
• Neutron
• Quark

The particles that are found in the nucleus of an atom are

• neutrons and electrons
• electrons only
• protons and neutrons
• protons and electrons

Tags

NGSS.MS-PS1-1

Where are electrons of an atom found?

• Nucleus
• Electron Cloud
• Some are in the nucleus and some in the electron cloud.
• They are moving everywhere.

Tags

NGSS.MS-PS1-1

What scientist is best known for his "Muffin with Berries" model of the atom?

• J.J. Tomson

• Ernest Rutherford

• John Dalton

• Democritus

What contribution did John Dalton make to atomic theory? 

• He discovered that every atom was positively charged. 
• He discovered that every element consisted of one type of atom.  
• He discovered that atoms had nuclei. 
• He discovered that atoms could be divided into smaller parts. 

Tags

NGSS.MS-PS1-1