在探究某种物质的熔化规律时，某同学记录的实验数据如下表所示。请回答下列问题：                                                                                                                                                                                                              

加热时间/min	0	1	2	3	4	5	6	7	8	9	10
物质的温度/℃	40	42	44	46	48	48	48	48	50	53	56