Question

A

Which of these is an example of a physical change?
sugar dissolving in warm water
iron rusting in the presence of moist air
wood burning in the presence of oxygen
baking soda reacting with acid to form a gas

Answer 1

Sugar dissolving in warm water

Step-by-step explanation:

There are two types of change in chemistry; physical and chemical changes.

A physical change is a type of change in which no new substance is formed while a chemical change is a type of change in which a new substance is formed.

Dissolving sugar in warm water is a physical change because no new substance is formed and you easily get the sugar back by evaporating the water