Leavening agent. A leaven /ËlÉvÉn/, often called a leavening agent /ËlÉvÉnÉªÅ/ (and also known as a raising agent), is any one of a number of substances used in doughs and batters that cause a foaming action (gas bubbles) that lightens and softens. An alternative or supplement to leavening agents is a mechanical action by which air is incorporated.
Symptoms of Dislocated Rib. Depending on which rib has been dislocated, the discomfort or pain may be felt in your back or chest. After some time, the skin over the dislocated ribs may swell and bruise. The moment the injury happens, a popping sound can be heard and a lump may surface over the rib.
1 It is caused by inflammation of the joints in the rib cage. 2  The symptoms of costochondritis include sharp chest pain, which feels worse when coughing, sneezing or breathing heavily, and tenderness or soreness of the rib cage.  The pain caused by costochondritis usually goes away within a few days or weeks.