is four, fine salt, and sugar pure substances or mixtures? i know that you have to combine some elements to get them, but i want to double check.
double check what?
what was your answer?
I'm thinking they are pure substances, but wanted to check
I assume you made a typo on four and you meant flour. Most flours are mixtures. Pure salt is a pure substance of sodium chloride but the salt you buy at the store is "iodized salt" and contains a small amount of NaI. Technically it is a mixture, also. You can buy "un-iodized" salt and that is pure.
White sugar(refined sugar) is pure C12H22 O11. Brown sugar (unrefined) is a mixture. It contains molasses.
To determine whether four, fine salt, and sugar are pure substances or mixtures, we need to understand the definitions of these terms.
A pure substance is a substance that is made up of a single type of particle, either an element or a compound.
A mixture, on the other hand, is a combination of two or more substances that are physically combined.
Starting with "four," it is a number and not a substance, so it does not fall under the category of pure substance or mixture.
Now, let's consider fine salt and sugar:
1. Fine Salt: Salt is a compound scientifically known as sodium chloride (NaCl). If the salt consists purely of sodium chloride without any impurities or additional substances, it is considered a pure substance. However, most commercially available salt contains various impurities and additives, making it a mixture.
2. Sugar: Similarly, sugar is a compound known as sucrose. If the sugar is pure and consists only of sucrose molecules without any other substances, it is a pure substance. But, like salt, commercially available sugar often contains impurities and additives, making it a mixture.
So, to summarize:
- Four is not a substance, so it is neither a pure substance nor a mixture.
- Fine salt is typically a mixture due to impurities and additives.
- Sugar can be either a pure substance (if it is pure sucrose) or a mixture (if it contains impurities or additives).
To be certain about the composition of the salt or sugar you have, you can refer to the product label or consult the manufacturer.