Changes Flashcards
What is a physical change?
When a substance changes only in form and not in chemical structure.
What is an example of a physical change?
Ice melting
Breaking a wooden pencil
Smashing a ball of clay
Ripping a paper
What is a chemical change?
When two substances form a new substance.
What is an example of a chemical change?
Burning anything
Iron rusting
Are new substances produced during a physical change?
No, because the substance has the same particles, and keeps its characteristic properties.
What happens to the characteristic properties of a substance during a physical change?
They stay the same.
Are new substances produced during a chemical change?
Yes, because a chemical change is when two or more substances are combines to create a new one. The new substances also have new properties.
What happens to the characteristic properties of a substance when a chemical change occurs?
They change because characteristic properties are unique to each substance, so it changes because there is a new substance.
