Question

1. what is a solution?

a. a mixture of two solids
b. a suspension of particles in a liquid
c. a pure substance
d. a homogeneous mixture of two or more substances
11)__________ refers to the amount of solute that can be
dissolved in a specific amount of solvent at a given
temperature/.
a. solvent capacity
b. solubility
c. concentration
d. saturation

1. in a solubility graph, what does the curve typically repres

a. temperature vs. pressure
b. volume of solvent
c. amount that can dissolve vs. temperature
d. density of solution

1. which solution would conduct electricity best?

a. tap water with a spoonful of c₆h₁₂o₆
b. vegetable oil with water
c. tap water with a spoonful of nacl
d. pure distilled water

Explanation:

• Question 10: A solution is defined as a homogeneous mixture of two or more substances. A mixture of two solids is just a physical blend (not a solution), a suspension has visible particles (not homogeneous), and a pure substance has only one type of particle (not a mixture).
• Question 11: Solubility is the amount of solute that can dissolve in a specific amount of solvent at a given temperature. Solvent capacity is not a standard term for this concept, concentration is about the amount of solute per amount of solution, and saturation refers to a state where no more solute can dissolve (not the amount that can dissolve).
• Question 12: In a solubility graph, the curve shows the relationship between the amount of solute that can dissolve (solubility) and temperature. It's not about temperature vs. pressure (a is wrong), volume of solvent (b is wrong - the graph is about solubility which is per a specific amount of solvent), and not density of solution (d is wrong).
• Question 13: Tap water with NaCl (sodium chloride) conducts electricity best. NaCl dissociates into \(Na^{+}\) and \(Cl^{-}\) ions in water, which are charge - carriers. \(C_{6}H_{12}O_{6}\) (glucose) is a non - electrolyte (doesn't dissociate into ions in water), vegetable oil and water is a non - conducting mixture (oil doesn't dissolve to give ions), and pure distilled water has very few ions (conducts poorly).

Answer:

1. d. A homogeneous mixture of two or more substances
2. b. Solubility
3. c. Amount that can dissolve vs. Temperature
4. c. Tap water with a spoonful of NaCl