A student investigates the time taken for water to evaporate completely from a shallow dish when heated from above by a lamp of constant power.

The following are available:

Plan an experiment to investigate how the surface area of the water affects the time taken for a fixed volume of water to evaporate completely.

You do not need to write about safety precautions.

You should:

state any additional apparatus required
explain briefly how you would do the investigation
state the key variables that you would keep constant
draw a table, or tables, with column headings, to show how you would display your readings (you are not required to enter any readings in the table)
explain how you would use your readings to reach a conclusion.

A student investigates the time taken for water to evaporate completely from a shallow dish when heated from above by a lamp of constant power.

The following are available:

Plan an experiment to investigate how the surface area of the water affects the time taken for a fixed volume of water to evaporate completely.

You do not need to write about safety precautions.

You should:

state any additional apparatus required
explain briefly how you would do the investigation
state the key variables that you would keep constant
draw a table, or tables, with column headings, to show how you would display your readings (you are not required to enter any readings in the table)
explain how you would use your readings to reach a conclusion.

2.2.3a Melting, boiling, condensation and solidification

2.2.3a Melting, boiling, condensation and solidification Questions