Energy in Bonding

Does breaking bonds require energy, release energy, or not involve energy at all?

• requires energy to break

• releases energy when broken

• No energy involved

Tags

NGSS.HS-PS1-4

What kind of energy change happens in the photosynthesis reaction in plant leaves?

• Endo

• Exo

• No change

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Burning leaves and burning a fuel provide a(n) _______ change.

• endothermic

• exothermic

• physical

Tags

NGSS.HS-PS1-4

When new chemical bonds form, energy ____________.

• is taken into the system.

• is released from the system.

• stays the same in the system.

Tags

NGSS.HS-PS1-4

A stable bond is ___________ bond.

• higher energy

• lower energy

Tags

NGSS.HS-PS1-4

Lower-energy bonds have __________ attractive force between two atoms or ions.

• stronger

• weaker

• no

A high energy bond __________ break.

• is more likely to break.

• less likely to break.

• will never break.

Bonding is the holding of two particles together by a significant ________ force

• repulsive

• attractive

• neutral

Potential energy in bonding is made by _______________ forces.

• electrostatic

• gravitational

• contact

How can we figure out if an overall reaction is endo- or exo-thermic? It is the difference between _______ and __________.

• hot and cold temperatures

• energy to break and energy to form bonds.

• time to form a bond versus time to break a bond

Tags

NGSS.HS-PS1-4