Chemical Bonding Review

Which of the following is true about chemical compounds?

• They are always combinations of two elements.

• A compound always has the same ratio of elements.

• A compound will never share a property with its elements.

 $Na_3N$  How many atoms of sodium are there in this compound?

Tags

NGSS.MS-PS1-1

What is a chemical bond?

• A force holding together a compound.

• A physical thing holding together a compound.

• When atoms in a compound physically combine.

What rule determines how many valence electron an atom wants to have?

• The Valence Rule

• The Octet Rule

• The Shell Rule

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is NOT a way an atom can satisfy the octet rule?

• Giving up or taking electrons

• Making new electrons

• Sharing electrons

What type of bond is formed by sharing electrons?

• Ionic

• Covalent

• Chemical

What type of bond can only be formed between two nonmetals?

• Ionic

• Covalent

• Binary

If an element has 5 valence electrons, what charge will its ion take on? (Include + or -)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

 $O^{-2}$  

What is the oxidation number for the listed ion?

Which element will definitely form a positively charged ion?

• Strontium (Sr)

• Silicon (Si)

• Sulfur (S)