Question

part 1: multiple choice questions

1. a teacher has given a group assignment to classify certain things as matter or energy. most of the students in the group have decided on the following classification:

matter: atoms, sugar, water, air
energy: heat, potential, kinetic, sound
however, there is one student who is arguing that all of the things listed in both categories can be classified as energy, and so that must mean that they can all be classified as matter, too.
which of the following provides the best scientific explanation as to why the things classified as energy are not also classified as matter?
a. the things classified as matter are only used to generate energy.
b. energy makes matter move, and the things classified as energy only make matter move.
c. you cannot hold the things classified as energy, so that must mean they cannot be classified as matter.
d. all matter has mass and occupies space, and the things classified as energy do not have mass and do not take up space.

Explanation:

• Option A: Matter is not only used to generate energy. Matter has its own properties like mass and occupying space. This option is incorrect.
• Option B: While energy can cause matter to move, this is not the fundamental difference between matter and energy. The key is the properties of matter (mass and space - occupation). So, this option is not the best explanation.
• Option C: Just because you can't hold something (a very simplistic view) doesn't mean it's not matter. For example, air (a gas, which is matter) can't be "held" in the same way as a solid, but it has mass and occupies space. This option is incorrect.
• Option D: The scientific definition of matter is that it has mass and occupies space. Energy forms like heat, potential energy, kinetic energy, and sound do not have mass and do not occupy space in the way matter does. This is the correct scientific distinction.

Answer:

D. All matter has mass and occupies space, and the things classified as energy do not have mass and do not take up space.