1st 9 weeks test REVIEW

Why is the overall charge of an atom neutral (0)?

• They have the same number of protons and neutrons.

• They have the same number of protons and electrons.

• They have the same number of electrons and neutrons.

Tags

NGSS.MS-PS1-1

From the diagram, which particles are indicated with the arrow?

• electrons and protons
• protons and neutrons
• electrons and neutrons
• photons and nucleons

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.

These particles orbit around the nucleus of an atom.  What are they called?

• electrons
• protons
• neutrons
• photons

Tags

NGSS.MS-PS1-1

The smallest particle with characteristics of an element is known as the

• Periodic Table

• Atom

• Proton

• Electron

electrons have this type of charge?

• negative
• positive
• neutral

Tags

NGSS.MS-PS2-3

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

• negatrons 
• electrons 
• neutrons 
• protons 

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

• nucleus 
• electron cloud
• core 
• center 

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

Identifies the number of protons in an atoms nucleus.

• Electron Cloud

• Atomic Theory

• Atomic Number

• Mass Number