The son of a weaver, Dalton's major contribution to the field of chemistry is his atomic theory proposed in 1803.
Answer:
Sodium oxide + Water - - - > Sodium Hydroxide.
A chemical change affects on the molecular level of matter, which makes it irreversible. Combustion is a pretty good exmple. Physical changes are reversible and dont alter the formula. Hope this helped!
Plant cells are rectangular or squarish in shape.
Plant cells have a large vacuole.
