Which substance is an example of a nonpolar compound?
water
water
food coloring
food coloring
sugar
sugar
vegetable oil
vegetable oil
Which option is a microscopic property that helps determine whether or not two substances will dissolve with each other?
state of matter
state of matter
molecular mass
molecular mass
volume
volume
polarity
polarity
Which statement is the best explanation for the graph?
As temperature rises, gas particles are moving faster and are more likely to enter the solution.
As temperature rises, gas particles are moving faster and are more likely to enter the solution.
As temperature rises, the space between liquid particles increases, allowing more room for gas particles.
As temperature rises, the space between liquid particles increases, allowing more room for gas particles.
As temperature rises, the space between liquid particles decreases, leaving less room for gas particles.
As temperature rises, the space between liquid particles decreases, leaving less room for gas particles.
As temperature rises, gas particles are moving faster and may leave the solution.
As temperature rises, gas particles are moving faster and are more likely to enter the solution.
A mother finds her daughter’s mug of hot cocoa on a table an hour after she had been drinking it. As the mother pours out the cocoa, she sees brown solids in the bottom of the mug. How can this be explained?
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went up.
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went up.
This would only happen if too much cocoa powder was added in the first place, because the solubility should not change.
This would only happen if too much cocoa powder was added in the first place, because the solubility should not change.
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.
All dissolved substances will come out of solution over time. If the mother waits long enough, then all of the powder will appear at the bottom of the mug.
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.
After which action would the concentration of a solution remain constant?
evaporating water from the container
evaporating water from the container
adding water to the solution
adding water to the solution
removing solution from the container
removing solution from the container
adding solute to the solution
adding water to the solution
To determine whether a compound is polar or nonpolar, you need to consider the difference in electronegativity between the atoms in the compound. If the electronegativity difference is small or nonexistent, the compound is nonpolar. Based on this information, we can analyze each substance:
1. Water: Water is a polar compound due to the difference in electronegativity between oxygen and hydrogen atoms. Oxygen is more electronegative, which creates a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms.
2. Food coloring: Food coloring typically consists of various molecules with different structures. It is difficult to generalize, but many food coloring compounds are nonpolar. This is because they contain carbon and hydrogen atoms, and the electronegativity difference between these two atoms is generally small.
3. Sugar: Sugar, also known as sucrose, is a nonpolar compound. It consists of carbon, hydrogen, and oxygen atoms bonded together, and the electronegativity difference between these atoms is small, resulting in a nonpolar molecule.
4. Vegetable oil: Vegetable oil is a nonpolar compound. It is composed of fatty acids, which are long hydrocarbon chains consisting of carbon and hydrogen atoms. Again, the electronegativity difference between carbon and hydrogen is small, making vegetable oil a nonpolar substance.
Therefore, out the given substances, vegetable oil is an example of a nonpolar compound.