AVID Chemistry

Atomic mass - Atomic Number =

• protons
• neutrons
• electrons
• Average Mass

Isotopes are two atoms of the same element that differ in the number of....

• protons
• Electrons
• Neutrons
• IONS

An element is defined by its number of 

• protons
• electrons
• neutrons
• protons + electrons

C-12 and C-14 are known as...

• Ions
• Isotopes
• Protons
• explosives 

Tags

NGSS.HS-PS1-8

Which of the subatomic particles is the lightest

• all have the same mass
• protons 
• neutrons 
• electrons

The relative mass of an electron is...

• 1
• 2
• 0
• 3

^{What does the 6 represent above the C}

• Symbol 
• Name 
• Mass Number 
• Atomic Number 

How many electrons can be held in the first energy level ?

• 1
• 2
• 8
• 16

What is this element?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

• Hund’s Rule
• Aufbau Principle
  
• Pauli Exclusion Principle