Gravimetric Analysis

Question 1

Heating to a constant mass:

Answer 1

• Heating substance
• Allowing to cool in a dessicator to prevent absorption of water
• Weigh
• Repeat the steps of heating, cooling and weighing until a constant mass is observed

Question 2

What is gravimetric Analysis used to do?

Answer 2

determine the mass of an element or compound in a substance

Question 3

Weigh by difference

Answer 3

• Record the mass of empty container
• Record the mass of container with sample
• Calculate mass of sample by subtraction

Question 4

What does weighing accurately approximately mean?

Answer 4

Weigh out mass close to the asked value (doesn’t have to be exact) but the exact mass you’ve weighed should be recorded