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.
AUTO MOBILE BONNET - ( Early 20c. ) Large brimmed hat worn with a long chiffon, net or tulle scarf that enveloped the face and hat and tied under the chin. Worn to protect the wearer while riding in the new open auto mobiles over dusty roads. To see even more different types of hats, click on the link below:-. Types of Hats - Alphabetical list E - M. BABET - Cap with a small puffered caul set high on the head, the sides descending over the cheeks. BABUSHKA - ( bah boosh ka ) - Russian word for grandmother.