Atoms and Ions

Atoms and Ions

Multiple Choice

Classify these pictures as Element, mixture or compound.

• Element, mixture, compound

• Mixture, compound, element

• Compound, element, mixture

• Mixture, element, compound

Rules of the shells

1. The 1st shell can hold up to two electrons.

2. Each shell thereafter can hold up to 8 electrons. 

Will it bond?

• If an atom is stable, it Will not Bond

• If an atom is unstable, it will Bond

Multiple Select

Select all of the compounds

• H₂O

• H

• CO₂

• CH₄

What are Compounds?

• Compounds are formed when 2 atoms of different elements bond together.

• Atoms bond to fill their valence shell

• An atom will bond with as many atoms as it takes to fill its outer shell

• Once the valence shell is full, that atom is stable

Multiple Choice

Where are the Valence Electrons Located?

• Inside the nucleus

• In the inner shell

• In the outermost shell

Stable or Unstable?

¢An atom is only stable if it has a full valence shell

Fill in the Blanks

Elements react to achieve full outer shells of electrons. The noble gases are _________ because they have ______ _______ ________ of electrons. This is the most stable arrangement of electrons.