Blessy has four different solids. She investigates how many grams of each solid she can dissolve in water. Here is what she does • pours 20 cm3 of water into a beaker • adds 1 g of solid to the water and stirs • if the solid dissolves she adds another 1 g of solid and stirs • she keeps adding 1 g of solid at a time until no more dissolves. Here are her results. name of solid sugar16g fertiliser===30g salt8g baking powder5g (a) Blessy keeps the temperature of the water for each solid the same. Explain why. (b) Blessy thinks it is a good idea to repeat her investigation. Explain why.