A catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This is called catalysis.A catalyst is not consumed by the reaction and it may participate in multiple reactions at a time.The only difference between a catalyzed reaction and an uncatalyzed reaction is that the activation energy is different. There is no effect on the energy of the reactants or the products. catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This is called catalysis.
A boater hat, also known as a sennit, basher, skimmer, or sailor, is a distinct type of straw hat. This piece of headwear has a stiff flat top and brim. A wide ribbon or piece of material is often wound around the crown of the hat.
Often the boater is referred to as a skimmer or sailors straw hat. This particular boater is trimmed with a dandy grosgrain ribbon of navy and red folded into a bow. This classic boater is made of stiffened braided Laichow straw, features a 2 inch brim and flat-top crown, measuring approx. 3 1/2 inches tall. Imported.