Simple Bonding

Given the equation representing a reaction:O + O --> O₂ Which statement describes the changes that occur as the oxygen molecule is produced?

• Energy is absorbed as bonds are broken

• Energy is absorbed as bonds are formed

• Energy is released as bonds are broken

• Energy is released as bonds are formed.

Tags

NGSS.HS-PS1-4

Which diatomic molecule is formed when the two atoms share six electrons?

• H₂

• O₂

• Cl₂

• N₂

Tags

NGSS.HS-PS1-1

A barium atom attains a stable electron configuration when it bonds with

• one chlorine atom

• two chlorine atoms

• one sodium atom

• two sodium atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The elements Li and F combine to form an ionic compound. The electron configurations in this compound are the same as the electron configurations of atoms in Group

• 1

• 14

• 17

• 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which bond has the least ionic character?

• KBr

• HF

• MgO

• BrCl

Tags

NGSS.HS-PS1-3

Element X is in Group 2 and element Y is in Group 17. What happens when a compound is formed between these two atoms?

• X loses electrons to Y to form an ionic bond

• X loses electrons to Y to form a covalent bond

• X gains electrons from Y to form an ionic bond

• X gains electrons from Y to form a covalent bond

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which formula is described correctly?

• BaCl₂ is covalent and molecular.

• H₂O₂ is covalent and empirical

• H₂O is ionic and molecular

• NaCl is ionic and empirical

Tags

NGSS.HS-PS1-1

When ionic bonds are formed, metallic atoms tend to

• lose electrons and become negative ions

• lose electrons and become positive ions

• gain electrons and become negative ions

• gain electrons and become positive ions

Which compound contains both ionic and covalent bonds?

• HBr

• CBr₄

• NaBr

• NaOH

Which statement describes a multiple covalent bond?

• Two electrons are shared.

• Four electrons are shared

• Two electrons are transferred

• Four electrons are transferred