Standard solution
Okay kiddo, let me explain standard solution to you. You know how we measure things with cups and spoons when we cook, right? In a similar way, scientists use standard solutions to measure substances in laboratories.
Imagine we want to know how much sugar is in a glass of lemonade. So we take a standard solution of sugar which has a known amount of sugar in it. Then we add a small amount of this standard solution to the lemonade and see what happens. If the lemonade turns a certain color or reacts in a particular way, we can figure out how much sugar was already in the lemonade.
It's kind of like a puzzle - we know one piece of the puzzle (the standard solution) and use that to figure out another piece (how much sugar is in the lemonade). Scientists always use standard solutions because they are precise and accurate - we know exactly how much of a substance is in the solution, so we can trust our measurements when we use it to test other things.
Does that make sense to you, little one?
Imagine we want to know how much sugar is in a glass of lemonade. So we take a standard solution of sugar which has a known amount of sugar in it. Then we add a small amount of this standard solution to the lemonade and see what happens. If the lemonade turns a certain color or reacts in a particular way, we can figure out how much sugar was already in the lemonade.
It's kind of like a puzzle - we know one piece of the puzzle (the standard solution) and use that to figure out another piece (how much sugar is in the lemonade). Scientists always use standard solutions because they are precise and accurate - we know exactly how much of a substance is in the solution, so we can trust our measurements when we use it to test other things.
Does that make sense to you, little one?