Chemical bonding

Why do elements bond?

• To be friends
• To create a new element
• To become stable

A ____________is the force that holds atoms together in a compound.

• Chemical Formula
• Chemical Reaction
• Chemical Bond
• Synthesis Reaction

Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-4

15. What is a valence electron?

• an electron that is found in the outermost shell of an atom.

• an electron found in the innermost shell of an atom.

• an electron found in the middle shell.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

16. What is the number of valence electrons for Calcium (Group 2)?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

18. What is the number of valence electrons for Neon and the other Noble Gases?

• 5

• 6

• 7

• 8

Tags

NGSS.HS-PS1-1

What is the charge of an aluminum ion that has 13 protons and 10 electrons?

• 3+

• 3 -

• no charge

2. Ionic Bonding involves:

• The transfer of protons

• The transfer of neutrons

• The transfer of electrons

• None Of the above

Tags

NGSS.MS-PS1-5

3. What do atoms that form positive ions tend to do?

• Tend to lose electrons

• Tend to lose protons

• Tend to gain electrons

• Tend to gain protons

4. What usually forms the positive ion?

• Metal

• Nonmetals

• None

6. What usually forms the negative ion?

• Nonmetals

• Metal

• Noble gases

• None