1. How do you know when: a solid has completely dissolved in a liquid?

a liquid has completely dissolved in another liquid?

2. What statements can be made about the solubility of polar, nonpolar, and ionic solutes in

nonpolar liquid solvents

slightly polar liquid solvents

ionic solvents

3. Knowing that water is polar, what generalization can you make about powdered drink mix?

4. Minerals dissolve and are carried from the land in stream water. Soil is also carried in stream water, but does not dissolve. What can you infer about minerals and soil?

1. A solid dissolves in a liquid when it mixes completely with the liquid. The solid has broken down into pieces so small that its particles spread all throughout the new mixture. The solid and liquid will stay mixed without shaking. Everything dissolves in water.

2. Polar substances are likely to dissolve in polar solvents. For example, ionic compounds, which are very polar, are often soluble in the polar solvent water. Non polar substances are likely to dissolve in non polar liquid solvents.

3. dont know this one

4. Flowing water can erode rocks and soil. Water dissolves minerals from rocks and carries the ions.  As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited.

Explanation:

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.