Решение:
- The scientist created a powder in the bowl in which materials are crushed.
Измельчены
- The technician picked up the heated object with a pair of hinged pieces using for grabbing something.
Щипцы
- The beaker of liquid is being heated on the surface used to make something hot.
Плитка
- The tool for crushing materials is nearly always used with a mortar.
Пестик
Ответ: 1. измельчены; 2. щипцы; 3. плитка; 4. пестик.