Which of the following has a full valence shell?

• Oxygen
• Neon
• Barium
• Carbon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements on the LEFT side of the periodic table will most likely form:

• Positive ions
• Negative ions
• Neutral Ions
• None of these

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An ionic bond forms when atoms ___________ electrons.

• gain
• share
• increase
• transfer

Tags

NGSS.HS-PS1-2

All chemical bonds involve two atoms sharing electrons.

• True
• False

If an atom loses two electrons what charge will it have?

• + 2
•  - 2
• +1
• -1

If an atom gains one electron what charge will it have?

• -2
• -1
• +1

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity

Tags

NGSS.HS-PS1-2

What is the number of valence electrons for Oxygen?

• 8
• 6
• 2
• 1

Tags

NGSS.HS-PS1-1

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

Tags

NGSS.MS-PS1-1

Atoms joined together by SHARING electrons are?

• Ionic bonds
• Covalent bonds
• Metallic Bonds
• James Bonds

Tags

NGSS.MS-PS1-1