Unit 3 Chemical Bonding (Chem 1)

Atoms held together by sharing electrons are joined by a(n) __________ _____________.

• Ionic Bond

• Hydrogen bond

• Covalent Bond

• Duet Bond

A neutral group of atoms joined together by a covalent bond is called a(n)

• Element

• Molecule

• Ionic Compound

• Mixture

Tags

NGSS.MS-PS1-1

The molecular formula for oxygen is

• O

• O2

• O3

• HO2

Tags

NGSS.MS-PS1-1

What is the charge on a noble gas & why?

• 0; they don't exchange electrons
• +1; they give away an electron
• -1; they gain an electron
• 1; they form only single bonds

Tags

NGSS.HS-PS1-1

An ionic bond is the attraction between:

• oppositely charged ions
• similarly charged ions
• neutral ions
• neutral atoms

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-3

 Which of the following is the correct formula for these two ions:
Al⁺³ +  S^-2

• AlS₃
• Al₂S₃
• Al₃S₂
• Al₃S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Whats the formula
Sr⁺²  +  (CO₃)^-2

• Sr(CO₃)
• Sr₂ (CO₃)₂
• Sr₁(CO)₅
• Sr(CO₅)

What type of elements will form an ionic bond?

• Metals + Metals
• Nonmetals + Nonmetals
• Metals + Nonmetals
• None of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

To form a charge of +2 an atom must _ electrons.  To form -3 it must _ electrons.

• Gain 2; Lose 3
• Gain 3; Lose 2
• Lose 2; Gain 3
• Lose 3; Gain 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Boron is in column 13 & has a charge of _.  Potassium is in column 1 & has a charge of _.

• -3; +1
• +3; -1
• -3; -1
• +3; +1

Tags

NGSS.HS-PS1-1