proteins
Paraffin wax melts into a liquid state when heated, but hardens again when cooled.
to kill the micro - organisms
No. Lava hardens into rock.
No. A sill forms when magma hardens parallel to the rock layers, which is usually horizontal. When magam hardens vertically, it forms a dike.
proteins
Clay
Clay
Clay
Paraffin wax melts into a liquid state when heated, but hardens again when cooled.
fat, butter
clay
to kill the micro - organisms
No. A material is heated, i.e. changes state, then hardens again. No chemical change, but at least a partial state change.
No. Lava hardens into rock.
pottery Answer: you will find glass being fused or heated in kilns.
The acid hardens the root tip so that it is less likely to break. The root tips have to be heated so that the stain is up taken and able to properly reach the chromatin ( which is dyed by the acectic orecin stain). This helps the cells to be seen more clearly under the microscope.