A student wrote four statements about water. 1 Water has a high specific heat capacity which maintains the temperature of water within cells. 2 Mammals rely on water having a relatively low latent heat of vapourisation to keep them cool. 3 When a negatively charged ion is added to water, the δ⁺ charge on the hydrogen atom is attracted to the ion. 4 When surrounded by water, non-polar molecules tend to be pushed apart from one another. Which statements are correct?