在探究甲和乙两种物体熔化规律时,小琴记录的实验数据如下表所示,请根据表中的实验数据解答下列问题.
时间\(/min\) | \(0\) | \(2\) | \(4\) | \(6\) | \(8\) | \(10\) | \(12\) | \(14\) | \(16\) | \(18\) | \(20\) |
甲的温度\(/℃\) | \(70\) | \(72\) | \(74\) | \(76\) | \(78\) | \(78\) | \(78\) | \(78\) | \(81\) | \(84\) | \(87\) |
乙的温度\(/℃\) | \(70\) | \(71\) | \(73\) | \(74\) | \(76\) | \(77\) | \(79\) | \(82\) | \(84\) | \(86\) | \(89\) |
\((1)\)在甲和乙这两种物质中,属于晶体的是 ______ \((\)填“甲”或“乙”\()\).
\((2)\)该晶体的熔点为 ______ \(℃.\)
\((3)\)该晶体在\(76℃\)时,它处在 ______ 态\(.(\)选填“固”、“液”或“固液共存”\()\)
\((4)\)固体在熔化过程中需要 ______ 热量\(.(\)选填“放出”或“吸收”\()\)