Solutions Unit Check #1
Quiz by Stephen Spitler
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- Q1
In a mixture of 25g sodium nitrate and 75g water, which is the solute?
neither substance is the solute
water
sodium nitrate
30s - Q2
What is true about solutes that can dissolve in a solvent?
The solvent particles are more attracted to one another than to the solute
The solute particles are more attracted to one another than to the solvent
The solute particles are more attracted to the solvent than to one another
30s - Q3
Based on "like dissolves like," will BaCl2 dissolve in H₂O?
No, because one is ionic and one is polar
Yes, because one is ionic and one is polar
No, because only one has a charge
30s - Q4
Based on "like dissolves like," will vegetable oil dissolve in H₂O?
Yes, because one is ionic and one is polar
No, because one is ionic and one is polar
No, because only one has a charge and the other is nonpolar
30s - Q5
Which type of compound conducts electricity when dissolved in solution?
Both ionic and covalent compounds
Only ionic compounds
Only covalent compounds
Neither ionic nor covalent
30s - Q6
What makes ionic solutions conduct electricity?
The presence of mobile ions in the solution
The presence of neutral atoms in the solution
The movement of free electrons in the solution
30s - Q7
Which solution type does NOT conduct electricity?
Electrolyte solution
Covalent solution
Ionic solution
30s - Q8
Which factor increases solid solute dissolution rate?
Decreasing the surface area
Increasing particle size
Decreasing temperature of the solvent
Agitating the solution
30s - Q9
How can you increase gas solubility in a liquid solvent?
Decrease both pressure and temperature
Decrease pressure and increase temperature
Increase both pressure and temperature
Increase pressure and decrease temperature
30s - Q10
Will CuSO₄ dissolve in methanol (polar)?
No, because polar solvents do not dissolve ionic compounds
Yes, because one substance is ionic and the other is polar
Yes, because one is polar and the other is nonpolar
30s - Q11
Will peanut oil dissolve in olive oil?
Yes, because both are nonpolar
No, because oils never mix
No, because they have different polarities
Yes, because both are polar
30s - Q12
How do ionic and covalent solutes differ when dissolving?
Ionic solutes remain whole molecules
Neither type changes during dissolution
Ionic solutes dissociate into ions while covalent solutes stay as molecules
Covalent solutes separate into ions
30s - Q13
What happens to the boiling point when adding a solute?
It increases
It increases and decreases
It remains unchanged
It decreases
30s - Q14
In a mixture of 65g alcohol and 25g water, which is the solvent?
Neither is the solvent
Alcohol
Water
30s - Q15
What's an effective way to increase dissolution rate for solid solutes?
Crushing the solute
Increasing particle size
Cooling the solution
30s