The outer skin makes the surfboard more expensive. Suggest two reasons why an outer skin is added to the polystyerene core. (2 marks)

It helps it not to break or crack. It is like an outer shell to protect it.

Explanation:

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.