Which of the following steps will speed up the reaction between a baking soda solution and a calcium chloride solution in a beaker? 1 keep the beaker in a freezer. 2 keep the beaker in sunlight. 3 pour the solutions into a flat dish. 4 pour the solutions into a narrow test tube.

Pouring  the  solution  into  a  flat disk  speed  up the  rate  of  reaction. This  is  because  it  will  led  to  a  increased  of   surface   area  of  a chemical  reaction  to  occur.The  increased  surface  area  led  to  increase  of collision  of  particles  thus  the  speed  of  the  reaction  is  increased. Since  the  reaction   is  exothermic  keeping the  beaker  in  a  freezer  may  also  speed  up the  reaction  rate.

Crust,mantle,core,earth