chemistry long quiz

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.HS-PS1-2

Covalent bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Tags

NGSS.MS-PS1-1

Is hydrogen considered a metal or a non-metal?

• A metal
• Nonmetal
• Metalloid

Tags

NGSS.HS-PS1-1

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the last shell.
• A type of bond.
• A popular compound.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Tags

NGSS.HS-PS1-2

Why do elements bond?

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

Tags

NGSS.HS-PS1-4

Ionic or covalent?
NaBr

• Ionic
• Covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How is covalent bonding represented?

• by writing its valence electrons

• by writing its Lewis structure

• by writing its number of bonds

• by writing its number of protons

What kind of element forms covalent bond?

• metals

• semi -metals

• non metals

• metal and non metal

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom