Question

1. Define the following terms.
(a) Reversible change
(b) Chemical change
(c) Physical change​

Answer 1

Answer:

• reversible change is a chemical change where no new materials are created and the original materials can be recovered.
• chemical change occurs when substance combine another from a new substance is called chemical change.
• physical change affecting the form of chemical change but not its chemical composition. physical change are used to separate mixture into their components compound but cannot usually be used to separate compound into chemical elements.

Answer 2

Answer:

a reversible change is a change that can be undone or reversed

a chemical change occur when a substances combines with another to form a new substances

physical change occurs when a substances undergo a change that doesn't change their chemical composition