WHAT IS THE DIFFERENCE? Chemical vs. Physical Changes

When a physical change occurs… it does NOT change what the substance is! Physical Changes It only changes the physical appearance. Then, what does it change?

When you change the state of matter What are three examples of Physical Changes? shape mixing/ dissolving

When a chemical change occurs… a brand new substance is formed! So, what about Chemical Changes?? For example, mixing vinegar with baking soda will react (and chemically change) to make a salt, water, and carbon dioxide gas!

If there is a change in the odor (was odorless, now it smells) What are five examples of Chemical Changes?

Odor changes

If there is a change in the color (colorless, and now it is bright yellow) Another example of a chemical change is

Color Change

If there is a change in the temperature (gets warm or cold WITHOUT an outside source) Actually any energy changeenergy change Another example of a chemical change is

Temperature Change

When a gas is produced… observe bubbling/ fizzing Another example of a chemical change is

Forming Bubbles

When a solid forms after mixing 2 liquids… this is called a precipitate. The last example of a chemical change is

Forming a solid