Question 17N.3.SL.TZ0.01b
| Date | November 2017 | Marks available | [Maximum mark: 2] | Reference code | 17N.3.SL.TZ0.01b |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | State | Question number | b | Adapted from | N/A |
To investigate the thermal properties of water, students placed hot water in two thin plastic cups and measured their rate of cooling. The sides of one cup were covered with tissue paper soaked in hot water; the other cup was left uncovered. The temperature was recorded with a thermometer every 4 minutes for 20 minutes. The temperature in the laboratory was 18 °C.
[Source: © International Baccalaureate Organization 2017]
[Source: © International Baccalaureate Organization 2017]
State two conditions that must be the same for each cup at the start of the experiment.
[2]
a. volume/mass/amount of water they contain
b. temperature of water
c. placed in similar environment/on similar surface
OWTTE
d. «container must be» the same shape/size/volume/surface area
Do not award “ambient room temperature” or “material of cups”
Do not accept “type of water”
[Max 2 Marks]