Why are changes in matter important?
Answers
Answer:
Explanation:
is important to understand the difference between chemical and physical changes. Some changes are obvious, but there are some basic ideas you should know. Physical changes are usually about physical states of matter. Chemical changes happen on a molecular level when you have two or more molecules that interact. Chemical changes happen when atomic bonds are broken or created during chemical reactions.
No Change to Molecules
Water molecules have the same structure in different states. The difference is the organization of the molecules.
When you step on a can and crush it, you have forced a physical change. However, you only changed the shape of the can. It wasn't a change in the state of matter because the energy in the can did not change. Also, since this was a physical change, the molecules in the can are still the same molecules. No chemical bonds were created or broken.
When you melt an ice cube (H2O), you have a physical change because you add energy. You added enough energy to create a phase change from solid to liquid. Physical actions, such as changing temperature or pressure, can cause physical changes. No chemical changes took place when you melted the ice. The water molecules are still water molecules.
Explanation:
Matter is anything that has mass and occupies space.
Changes in matter occur due to change in the kinetic energy of its molecules as due to these changes a matter is able to change its state.
Since, matter gets affected by energy. As a result, when a substance absorbs enough energy then its atoms or molecules move around.
And, when increase in this energy takes place then atoms tend to collide frequently with each other. Hence, it causes change in state of a substance.
Therefore, changes in matter are important for the conservation of energy.