The mole is important because it allows chemists to work with the subatomic world with macro world units and amounts. Atoms, molecules and formula units are very small and very difficult to work with usually. However, the mole allows a chemist to work with amounts large enough to use.
Why do chemists use the mole?
Atoms are the building blocks of matter, and atoms can be connected to make molecules. Because atoms, molecules, and other particles are all extremely small, you need a lot to even weigh them, so that’s why chemists use the word “mole.” Keep in mind that not everything weighs the same if you have a mole of it.
Why do you think chemists prefer using the mole Why don’t they just count each particle?
A large counting unit like the mole is used to count atoms because atoms are too small to count individually. We use the mole to count atoms and molecules because otherwise, we would have to write out very large numbers to show how many atoms were in a certain amount of a substance.
Why do chemists use the mole quizlet?
Chemists use the mole because it is a convenient way of knowing how many representative particles are in a sample. … The mole is a unit for counting 6.02 1023 representative particles. The dozen is used to count 12 items.
How is mole concept important to our daily lives?
The mole is a unit used to talk about atoms. It is similar to other units we use everyday. For example, you might walk into the local sweet shop and order a dozen laddoos . In doing so, you know that you will get 12 of these laddoos and the owner knows to give you 12.
Why might it be easier for chemists to talk about substances in number of moles rather than number of atoms or molecules?
That’s what a mole is – but why do we need it? Well, for starters, it makes expressing amounts of chemicals a lot easier. We don’t have to represent the number of molecules of a substance we have, and use the large numbers that that would entail, and we can instead use moles in our calculations to simplify them.
Why is a mole similar to a dozen?
One mole consists of Avogadro’s number of atoms i.e., 6.02×1023 atoms. – The amount of atoms in 12.0 grams of Carbon; 12 is the same as Avogadro’s number as it is for 1 mole of carbon i.e. a sample of 12 grams of carbon is equal to its one mole. Therefore, it is similar to a dozen.
Why do chemists convert between moles and grams?
Chemical reactions often take place at levels where using grams wouldn’t make sense, yet using absolute numbers of atoms/molecules/ions would be confusing, too. So, scientists invented the mole to bridge the gap between very small and very large numbers.
Why is a mole a better unit than a PCU?
Reasons for moles: You can easily approximate the number of atoms from the mass of a sample because the mass number of an isotope approximately equals the mass of 1 mole of atoms in grams. It’s a historical convention that would be too expensive or uncomfortable to change now.