Laboratory Safety and Procedures
Interactive Video
•
Chemistry, Physics, Science
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the two holes in the lid of the calorimeter?
To release steam
To add more water
To insert a thermometer and a stirring rod
To allow air circulation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to weigh the metal sample accurately?
To calculate the exact amount of heat absorbed
To ensure it fits in the test tube
To prevent it from floating
To make it easier to handle
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What precaution should be taken when pouring the metal into the test tube?
Pour it at an angle to prevent breaking the test tube
Pour it directly from a height
Pour it slowly to avoid splashing
Pour it quickly to avoid cooling
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it necessary to measure the initial temperature of the water in the calorimeter?
To check if the thermometer is working
To calculate the temperature change after adding the metal
To compare with room temperature
To ensure it is at boiling point
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main objective of Part B of the experiment?
To calculate the mass of a solid
To determine the density of a solid
To find the enthalpy of solution of a solid
To measure the boiling point of water
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to tare the weighing boat before adding the solid?
To ensure accurate measurement of the solid's mass
To prevent the solid from sticking
To make the balance more stable
To avoid damaging the balance
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be done if the balance overloads while weighing the water?
Increase the balance capacity
Use a larger beaker
Use a triple beam balance
Reduce the amount of water
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