Question

solutions like steel and bronze are proof that...
solutions are always solids.
solutions can be in any state of matter.
solutions must have color.
all solutions are metals.
5 multiple choice 1 point
strong electrolytes...
dissolve partially in water and are strong conductors of electricity.
dissolve completely in water and are strong conductors of electricity.
do not dissolve at all in water and are strong conductors of electricity.
6 multiple choice 1 point
an athlete makes a protein shake by adding protein powder to water. if the shake has to remain at a cold temperature, how should the athlete increase the solubility of the protein powder?
they should create a new solution.
they should increase the temperature.
they should increase the pressure.
they should agitate the mixture by shaking.

Explanation:

Question 1 (about steel and bronze solutions)

Steel and bronze are solid solutions (alloys). Solutions can be solid (like these alloys), liquid (e.g., salt water), or gas (e.g., air). The first option is wrong as solutions can be liquid/gas. Solutions don't need color (e.g., sugar water is colorless), so third is wrong. Not all solutions are metals (e.g., sugar water), so fourth is wrong. Thus, solutions can be in any state of matter.

Strong electrolytes dissociate completely in water (unlike weak electrolytes which dissociate partially) and, due to many ions, are strong conductors of electricity. The first option says "partially" (wrong for strong electrolytes). The third says "do not dissolve at all" (wrong, they dissolve completely). So the correct one is the second option.

To increase solubility of a solid solute (protein powder) in liquid (water) at constant cold temperature, agitation (shaking) increases the rate of dissolution (and effectively solubility in practical terms here, since temp is fixed). Creating a new solution doesn't help. Increasing temperature is not allowed (needs to remain cold). Pressure has little effect on solid - liquid solubility. So shaking (agitating) is the way.

Answer:

B. solutions can be in any state of matter.

Question 5 (Strong electrolytes)