Answer:
1. What is matter?
Matter is anything that has mass and takes up space.
2. What is energy?
Energy is the ability to do work or cause change.
3. How are matter and energy related?
Matter and energy are related through the concept of mass-energy equivalence, which states that matter can be converted into energy and vice versa.
4. Can all events involving matter and energy be explained?
No, not all events involving matter and energy can be explained with our current understanding of physics. There are still many mysteries in the universe that scientists are working to unravel.