Understanding Chemical Reactions and Equilibrium

What happens when two molecules collide without reacting?

• They create energy

• They bounce off each other

• They exchange parts

• They form a new compound

Which of the following is NOT a type of chemical reaction?

• A molecule splitting into two

• Molecules joining to form a new molecule

• Molecules exchanging components

• Molecules passing by each other without interaction

Tags

NGSS.MS-PS1-2

What is required for a chemical reaction to occur between molecules?

• High temperature

• Correct orientation and sufficient energy

• Light exposure

• Presence of a catalyst

Which example illustrates a reaction that cannot go in reverse?

• Fireworks exploding

• Water freezing

• Milk souring

• Iron rusting

What does the 'face-arm guy' scenario illustrate about chemical reactions?

• Decomposition only

• Irreversible change

• Creation of new elements

• Reversible reactions

Tags

NGSS.MS-PS1-2

At equilibrium, what can be said about the rate of forward and reverse reactions?

• Forward rate is higher

• Reverse rate is higher

• Both rates are equal

• Both rates are zero

What does 'nirvana equilibrium' imply in a chemical context?

• Complete cessation of reactions

• Constant but equal rates of forward and reverse reactions

• Only forward reactions occur

• Reactions occur at maximum rate

Tags

NGSS.HS-PS1-7

Which of the following also exhibits a pattern similar to chemical equilibrium?

• Photosynthesis

• Solar system

• Gene pools

• Water cycle

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5