Kinetic Theory states that all matter is made up of small particles (e.g. - atoms, molecules) that are in motion. Which of the following phenomena cannot be explained with Kinetic Theory?

Question

1. When 4.0 g of magnesium reacts completely with 2.7 g of oxygen, 6.7 g of magnesium oxide is formed. When food coloring is added to water, it disperses throughout the container.

2 A metal bar expands when it is heated.

3The odor of an air freshener spreads throughout a room when only a small amount is sprayed.

4.The pressure of gas in a closed container increases as the temperature is increased.

( my note) I am studying for a test and this is a question i don't understand. I have been ill for 90% of the year and have missed many classes do to mu health. Please note i am not trying to just skip the process of learning I just need a little boost.

Answer 1

Hi Nikki,

I think you've made a mistake in copying this question, or maybe your teacher made a mistake in printing the question.

1. When 4.0 g of magnesium reacts completely with 2.7 g of oxygen, 6.7 g of magnesium oxide is formed. When food coloring is added to water, it disperses throughout the container.

There's two totally different phenomena here. One is the magnesium reaction and the other is the food coloring dispersal. That being said, the answer is the magnesium reaction.

The other answer choices are explained by the Kinetic Theory since they are all related to the physical motion of particles. Molecules move. They move faster at higher temperatures, but they are always moving.

The magnesium reaction phenomena is explained by the law of conservation of mass.