100 g of a clear liquid is evaporated and a few grams of white crystals remain. the original liquid was a..? Please help.

solution?

idk i was looking for the answer myself

I believe it’s Heterogeneous mixture.

My bad! Turned out it’s homogeneous mixture

To determine the nature of the original liquid, we need to consider the process of evaporation and the properties of different substances.

1. Evaporation: When a liquid is heated or left exposed to air, it undergoes evaporation, which causes the liquid to convert into a gas and escape into the atmosphere. During this process, any solid dissolved in the liquid will remain behind.

2. White Crystals: Since a few grams of white crystals remain after the evaporation, it suggests that these crystals were originally dissolved in the liquid and did not evaporate with the liquid.

Based on these observations, it is likely that the original liquid was a solution containing a solid substance. When the liquid evaporated, the solid substance separated out and formed white crystals.

To identify the specific solid substance, further investigation is required. You can try the following steps:

1. Appearance: Observe the characteristics of the white crystals. Note their shape, size, and any other distinguishing features. This visual information may provide initial clues about the substance.

2. Solubility: Test the solubility of the white crystals in different solvents. Add a small amount of the crystals to various liquids (e.g., water, ethanol, acetone) and observe if they dissolve or not. The solubility behavior can help narrow down the possibilities.

3. Chemical Tests: Perform simple chemical tests to determine the identity of the white crystals. This may involve testing the crystals for acidity or basicity, reaction with common chemicals, or using specific reagents to identify certain ions (e.g., silver nitrate for chloride ions). These tests can give you further insights into the properties of the substance.

4. Reference Materials: Consult reference materials such as chemical databases, textbooks, or online resources that provide information about the properties and characteristics of known substances. By comparing the observed properties of the crystals with the data in these references, you might be able to identify the substance.

Remember, it is important to exercise caution when handling unknown substances and always follow appropriate safety protocols. If you are uncertain or lack the necessary expertise, consider seeking help from a professional chemist or a laboratory.