First Quarter Review

What is atomic number?

• Number of protons in an atoms 
• Number of neutrons in an atom
• Mass of an atom
• Charge on an atom

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

Tags

NGSS.MS-PS1-1

The subatomic particles in green are...

• Protons
• Neutrons
• Electrons

Tags

NGSS.MS-PS1-1

How many electron shells/levels does this atom have?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.MS-PS1-1

On the periodic table, Groups are

• Horizontal rows

• Vertical columns

On the periodic table, Periods are

• Horizontal rows

• Vertical columns

The innermost energy level has a maximum of how many electrons?

• 1

• 2

• 6

• 8

Tags

NGSS.MS-PS1-1

If an atom of Phosphorus has 16 neutrons, what is it's mass number?

• 15

• 16

• 30.974

• 32

What is the coefficient in 6NO₂?

• 1

• 2

• 6

• 12