Temperature affects the way crystals grow through molecule movement. Higher the temperature, warmer the crystal solution, faster the molecule movement. In which case, the crystal growth will increase. The shape of a crystal is determined by the molecular structure of the chemical compound. Every crystal that forms for each type of chemical is identical in every way, except its size. For example, salt crystals are always cube-shaped, while every snow crystal has six sides. Despite the hundreds of chemicals that form crystals, they only form seven different shapes. However, the size of a crystal is directly affected by temperature.
Aim: ~to determine the effect of temperature on copper sulphate crystals and their growth
Hypothesis: ~ the crystals will grow better when they are in room temperature.
Dependent variable: ~ the size of the crystals.
Independent variable: ~ the temperature.
Controlled variable: ~ ml’s of copper sulphate per dish, the same dishes, the volume and concentration.
Method: ~
1. Set up 12 watch glasses with 20ml of copper sulphate (wet) solution in each.
2. Place 4 of the dishes in a