Which is the best reason for choosing the beaker for heating the solution? The beaker is the only container that can withstand high temperatures.

The beaker’s wide mouth makes it easier to hold a capillary tube with tongs.

The beaker will not tip over when placed on the hot plate.

The beaker is unbreakable.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.