Saturated, unsaturated and supersaturated solutions
Grade 10 Science Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
Salt dissolves up to 36 g per 100 g of water at 25 °C. 60 g of salt is stirred into 150 g of water at 25 °C. How many grams stay undissolved, Esme?
Baking soda dissolves up to 11.1 g per 100 g of water at 30 °C. 30 g is stirred into 200 g of water at 30 °C. How many grams stay undissolved, Jun?
Sugar dissolves up to 200 g per 100 mL of water at 25 °C. 290 g is stirred into 130 mL of water at 25 °C. How many grams stay undissolved, Kira?
Kira says crystals at the bottom of a solution mean it is supersaturated. Which reply fits, Luz?
- Agree, as long as the solution is still warm
- Disagree: leftover crystals sit in a saturated solution
- Agree: extra solid means extra solute is dissolved
Noah says a saturated solution can dissolve no more at any temperature. Which reply fits, Milo?
- Agree: saturated means full, whatever the temperature
- Agree: temperature has no effect on how much dissolves
- Disagree: warming usually lets more of a solid dissolve
Pia says a supersaturated solution holds more solute than it normally can. Which reply fits, Noah?
- Agree: it is above the limit, so it is unstable
- Disagree: it holds less solute than a saturated one does
- Disagree: no solution can ever hold more than its limit
On a baking soda solubility chart, a point sits at 50 °C and 10.0 g per 100 g; the curve reads 14.5 g there. Which is it, Pia?
- Supersaturated: the point is above the curve
- Saturated: the point is close enough to the curve
- Unsaturated: the point is below the curve
A point sits at 30 °C and 11.1 g per 100 g; the curve reads 11.1 g there. Which is it, Ren?
- Supersaturated: the point is above the curve
- Saturated: the point is on the curve
- Unsaturated: the point is just below the curve
A point sits at 0 °C and 9.0 g per 100 g; the curve reads 6.9 g there. Which is it, Tala?
- Supersaturated: the point is above the curve
- Unsaturated: the point is below the curve line
- Saturated: the point is on or near the curve
At what temperature does 16.5 g of baking soda per 100 g of water just saturate the solution, Zee?
- 20 °C, where the table reads 9.6 g
- 100 °C, where the table reads 23.6 g
- 60 °C, where the table reads 16.5 g