Chemical bonding and reactions

An ionic bond is the attraction between all of the following EXCEPT

• oppositely charged elements

• similarly charged ions

• metals and nonmetals

• neutral atoms

An endothermic reaction is usually indicated by

• an increase in temperature

• a decrease in temperature

• the presence of a catalyst

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How many Oxygen does it take to form 2 H₂O?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

If I had an element has a charge of ²⁺ how would you describe the formation of that ion?

• gained 2 electrons

• lost 2 electrons

• gained 4 electrons

• lost 4 electrons

Carbon is perfect for forming large molecules because

• Carbon can bond with up to 4 other atoms.

• Carbon can only bond with other carbon atoms.

• Carbon can form both ionic and covalent bonds

• Carbon likes to give away its 4 electrons

Tags

NGSS.MS-PS1-1

Which of the following is NOT a step in forming an ionic bond?

• One atom shares its electrons with another one

• Opposite charged ions form due to the transfer of electrons

• One atom gives electrons to another one

• Elemets become charged

What type of bond is formed between Li and F?

• Covalent

• Ionic

• Metallic

• Carbon

Ionic bonds are between...

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

Which of the following is a Covalent compound?

• NaCl

• CaCl₂

• KI

• CO

Which element will be paired to Sulfur for it to become a covalent compound?

• Potassium

• Magnesium

• Aluminum

• Carbon

Tags

NGSS.MS-PS1-1