DP Biology (last assessment 2024)

Test builder »

Question 19M.3.HL.TZ1.a

Select a Test
Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.3.HL.TZ1.a
Level HL Paper 3 Time zone TZ1
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 2]
19M.3.HL.TZ1.a

Water in a calorimeter is heated by burning food in oxygen. The temperature change of the water is used to calculate the energy value of the food. An experiment was set up to calculate the energy value of avocado.

[Source: © International Baccalaureate Organization 2019]

Apart from the water temperature, state two other values to be measured at the start of the experiment.

1.

2.

 

[2]

Markscheme

a. mass/volume of water ✔ 

b. mass of avocado ✔

Examiners report

Many students missed these relatively simple marks by using language that lacked precision using terms, such as “amount” rather than mass or volume. This is the same problem that affects students when writing their individual investigations submitted for internal assessment.

Syllabus sections