The pH of a solution indicates the concentration of free H+ ions in solution on a negative log base 10 scale. Low pH (acidic) means high H+ concentration High pH (basic) means low H+ concentration.
Mistakes. 1  In the manga, Ravenpaw is shown with a slightly altered appearance from his description in the books. 2  He has been mistakenly called Ravepaw. 3  He was mistakenly mentioned with blue eyes.  He is mistakenly called a rogue by Sandstorm in A Clan in 1  Need. He is mistakenly called 'Ravenclaw' by Vicky.
Blackbird vs Hawk vs Raven vs Crow. As the family of ravens and crows is same as Corvid, however blackbirds belong to thrush family. In terms of size, crows are much smaller than ravens and hawks, but raven can grow up to hawk size.The size of a blackbird could be from 23 to 29 cm. You can differentiate these birds on behalf of their tails as well that is wedge-like in case of raven, but fan like in case of crow.lackbird vs Hawk vs Raven vs Crow. As the family of ravens and crows is same as Corvid, however blackbirds belong to thrush family. In terms of size, crows are much smaller than ravens and hawks, but raven can grow up to hawk size.