Bases increase the concentration of hydronium ions by donating hydroxide ions to water molecules.
true
false

The given statement is false.

Explanation:

Acid as are defined as those substance which gives hydrogen ions in their aqueous solutions.

Base as are defined as those substance which gives hydroxide ions in their aqueous solutions.

The given statement is false.The correct statement is :

Bases increase the concentration of hydroxide ions by donating hydroxide ions to water molecules.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.