fACTORS AFFECTING RATES OF CHEMICAL REACTION

  How will crushing a solid into a powder increase reaction rate?

•   The particles will collide with more energy.

• The powdered form has more surface area.

• The activation energy barrier will be lowered.

• the orientation of colliding particles will be improved.

What happens to the reaction rate when the temperature increases?

• speeds up

• slows down

• stays the same

• changes direction

Why do you think is the reason why chefs prefer iodized salt compared to rock salt in terms of cooking the food better?

• due to its catalyst

• due to its temperature

• due to its surface area

• due to its concentration

What is the role of a catalyst in a chemical reaction?

• slows down reaction

• makes the reaction more complex

• speed up the reaction without being used up

• changes the reactants into different substances

to remove clothes stains faster, one either uses higher amounts of calamansi extract or laundry bleach. What factor influences this situation?

• temperature

• size of the reactants

• presence of catalyst

• concentration of the reactants