Answer:
Option C. Neutral
Explanation:
A solution that does not change the colour of litmus paper is a neutral solution. Thus, the solution does not conduct electricity because there is no free ions in the solution
Answer: Aluminium
Explanation: Aluminium metal has a lower density than copper. So, for the same volume of metal used to build a model airplane, the aluminium plane would be very lightweight while that of copper would be heavy. The lightweight airplane will fly easily.
An isotope is the vary of neutrons in an element, causing its atomic mass to change. While an ion is a charged atom that bonds to be stable.
The third one, it releases H+ions into a solution.
