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Is a mixture of sugar and chalk heterogeneous?
No, a mixture of sugar and chalk is considered heterogeneous. This is because sugar and chalk do not dissolve in each other, so they would have visible differences and not form a uniform composition throughout the mixture.
Is table sugar a mechanical?
Table sugar is not a mechanical mixture but a compound. Table sugar is composed of two or more elements so it can be categorized as compound mixture as the formula C12H22O11 describes it as a compound.
Why is gold such a valuable mineral?
Gold is considered valuable due to its rarity, durability, and beauty. It has been used for centuries as a form of currency, a store of value, and for ornamental purposes. Its scarcity and the extensive mining process required to extract it also contribute to its value.
Why are lactose and maltose considered reducing sugars, while sucrose is not?
Lactose and maltose are considered reducing sugars because they have a free aldehyde or ketone group that can reduce other substances. Sucrose, on the other hand, does not have a free aldehyde or ketone group, so it is not considered a reducing sugar.
What is the pH of sugar water?
The pH of sugar water is typically close to 7, which is considered neutral. However, the exact pH can vary depending on the type and concentration of sugar used, as well as any impurities present in the water.
