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Experiment 1 : To test the change of state and form of material 1 when it is mixed with material 2, both having different densities, viscosity and temperature.
Apparatus and Materials Required : Candle wax, tall jar full of water, buckets , various containers of different sizes to pour melted wax into, heating mechanism (stove or heat gun), OHP sheet 0.2 mm, heat gun temp 400-550 deg.C, OTG 100-250 deg.C.
Procedure :
Melting wax into its liquid form and pouring into different smaller containers and lowering the same, simultaneously into the jar full of cold water.
Water at different temperatures and volume of wax is changed and observed what form is obtained when it solidifies.
Volume of water and shape of jar is also varied to have different forms.
Apply heat to A4 plastic sheet (OHP) with a heat gun and OTG at different temperatures and observe change in form of sheet.
Copy of VID20200811114523.mp4
3 candles weighing 5 gm each were taken and melted.
The temperature of water used was around 20 degrees Celsius
Result - The wax takes time to solidify and forms into multiple small flaky pieces.
15 candles weighing 5 gm each were taken and melted.
The temperature of water used was around 25 degrees Celsius (room temp.)
Result - The wax takes a little more time to solidify, which provides it with more space to spread and create one form. The form is weak and breaks into two where there is less material.
10 candles weighing 10 gm each were taken and melted.
The temperature of water used was around 10 degrees Celsius (room temp.)
Result - The wax solidifies in seconds but this time forms a solid chunk with smaller growths on the sides. This form is capable of standing by itself and has varying thickness across its surface.
10 candles weighing 10 gm each were taken and melted.
The temperature of water used was around 30 degrees Celsius (room temp.)
Result - There is a larger spread as there is a larger exposed surface of water as well. The height of the form is lesser as compared to the others and is much denser at the base with a thin sheet at the top.
10 candles weighing 10 gm each were taken and melted.
The temperature of water used was around 20 degrees Celsius (room temp.)
Result - There is non-uniform growth and the wax spreads throughout the bucket. This time is gives multiple growths from one point.
10 candles weighing 10 gm each were taken and melted.
The temperature of water used was around 20 degrees Celsius (room temp.)
Result - The wax solidifies in seconds but this time forms an elongated solid chunk with reduced smaller growths on the sides. This form is capable of standing by itself and has quite uniform thickness throughout.
OHP sheets of thickness 0.2 mm heated with heat gun at 400 degree Celsius across the entire surface periodically. Each square of heated for 3 seconds.
0.2 mm OHP sheet was used.
The temperature in oven was 250 degrees Celsius.
Result - The sheet crumples up and shortens from every direction, the plastic reforms and accumulates at the center of the sheet.
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