Kinetics and Equilibrium

What two factors govern whether a collision between reacting particles will be effective?

• orientation and potential energy 
• kinetic energy and temperature 
• kinetic energy and orientation 
• potential energy and kinetic energy 

More collisions correspond to a: 

• Faster reaction rate  
• Slower reaction rate
• Constant reaction rate 
• None of the above

Which of the following is NOT a factor affecting reaction rate?

• temperature
• catalysts
• particle size
• polarity

To slow down a chemical reaction you will do one of the following:

• Place the reactants in hot water
• Place the products in ice bath
• Place the reactants in a ice bath
• Keep stirring the reactants with a stirring rod

Tags

NGSS.HS-PS1-5

In an endothermic reaction, heat is ,,,

• absorbed

• released

In an exothermic reaction, heat is ...

• absorbed

• released

Do the reactants in an exothermic reaction have a higher or lower energy than the products?

• Higher

• Lower

Tags

NGSS.HS-PS1-4

Do reactants in an endothermic reaction have a higher or lower energy than the products?

• Higher

• Lower

Tags

NGSS.HS-PS1-4

What is activation energy?

• The maximum amount of energy used

• The minimum amount of energy required for a reaction to start

• The energy of the reactants

• The energy possessed by the products

Which state of matter will react the SLOWEST?

• solid

• liquid

• gas

• the all react at the same rate