Chemistry Questions
Explore questions in the Chemistry category that you can ask Spark.E!
what is the most useful product of nuclear reactors?
The formation of ozone begins when an O2 molecule is split by
concentrations exceed NAAQS on a regular basis.
The greatest emission of sulfur dioxide comes from
Which is most strongly absorbed by ozone in the stratosphere
Why is smog often worse in the summer months than in the winter? Two reasons are needed.
Hydrogen phosphate (biphosphate) formula and charge
Hydrogen sulfate (bisulfate) formula and charge
Hydrogen carbonate (bicarbonate) formula and charge
Dihydrogen phosphate formula and charge
Different substances have different solubilities. Temperature affects dissolving but doesn't have the same effect on all substances. The solubility of sugar increases with temperature at a greater rate compared to salt.
As the temperature of a liquid increases, the attraction between the liquid and the gas decreases and therefore the rate at which the gas leaves the liquid increases.
The electrons of the hydrogen atom are more attracted to the protons of the oxygen atom (oxygen has 8 protons while hydrogen only has 1). This causes the electrons to split unevenly between hydrogen and oxygen. They are closer to the oxygen atom.
Water dissolves salt because the negative part of a water molecule, the oxygen part, is attracted to the positive part of the salt, the sodium part. The positive part of the water molecule, the hydrogen part, is attracted to the negative part of the salt, the chlorine part. Dissolving happens when the attractions between the water molecules and the sodium chloride ions overcome the attraction of the ions to each other, causing the ions to separate from each other and mix into the water.
There is a slight negative area near the oxygen and a slight positive area near the carbon. Therefore, carbon dioxide is polar can be dissolved in water.
Covalent because oxygen and hydrogen share hydrogen's valence electron
Water is only attracted to polar molecules. Because oil is non-polar, oil and water are not attracted so they cannot dissolve in each other. Oil cannot dissolve salt or sugar as well as water does because it is non-polar.
The molecules are attracted to other molecules as much as their own when many molecules are together.
In a sucrose molecule, the area near the hydrogen is positive, and the area near the oxygen is negative. When sugar is placed in water, the positive part of the water molecule, the hydrogen part, is attracted to the negative area of a sucrose molecule, the oxygen part. The negative area of the water molecule, the oxygen part, is attracted to the positive part of the sucrose molecule, the hydrogen part. When the attraction between water and sucrose overcomes the attraction between sucrose and other sucrose, the whole sucrose molecules will separate from one another. When this happens, the sugar dissolves in the water. The sucrose molecule does not come apart into individual carbon, hydrogen, and oxygen atoms.
The electrons are closer to the oxygen atom. Because this means oxygen gained electrons, it becomes negative. Therefore, this end of the molecule tends to be more negative. Then this means the hydrogen part of the molecule is positive. Because the electrons are spending more time at one end of the molecule than the other, it is called a polar molecule.