Question

TASK: A student conducted an investigation to observe the change in temperature observed with the increase in mass of Calcium Oxide added to water.


Investigate on the following problem statement. Write a lab report for this investigation, by answering the questions given in this task sheet.

Problem statement: What is the relation between the mass of Calcium Oxide added to water and change in temperature observed, provided the volume of water remains constant?

Criterion B

Lab Report Questions:

Criterion B: (Design and Investigation)

Question 1) Outline a testable Hypothesis for the problem statement.

Question 2) List the variables:

Independent Variable: IV

Dependent Variable: DV

Control Variables:

1.

2.

Question3) List the materials /equipment required to carry out the investigation.

Question 4) Design the observation table with proper rows and columns and draw it here. Use the raw data given below and organize it in the observation table.

Beaker 1– 5 g of Calcium Oxide taken- Initial temperature- (25°C) & Final temperature- (27°C), Temperature rise - (2°C)

Beaker 2– 10 g of Calcium Oxide taken- Initial temperature- (25°C) & Final temperature- (30°C), Temperature rise - (5°C)

Beaker 3– 15 g of Calcium Oxide taken- Initial temperature- (25°C) & Final temperature- (32°C), Temperature rise - (7°C)

Beaker 4– 20 g of Calcium Oxide taken- Initial temperature- (25°C) & Final temperature- (35°C), Temperature rise - (10°C)

Beaker 5– 25 g of Calcium Oxide taken- Initial temperature- (25°C) & Final temperature- (38°C), Temperature rise - (13°C)

Criterion C: (Conclusion and Analysis)

Question 5) Based on the observation table, discuss the validity of your hypothesis by explaining if your hypothesis is supported by the observations during the investigation.

Question 6) Support your answer to Question 5 with the help of balanced chemical equation

Answer 1

Answer:

happy navratri

Explanation:

Jay jagdambe maaaaa