7.P.2B.5 Develop and use models to explain how chemical reactions are supported by the law of conservation of matter.
Matter cannot be created or destroyed. It can change form and appear to vanish but this is most often changing to a gas (physical change) or releasing of a gas as a product (chemical change).
See if you can guess which examples in the video below are chemical changes and which are physical changes.
Note: Login is required for Brainpop during teacher led instruction only.
Challenge: See if you can change the number of atoms on either side to balance the equation.
Think you have it all figured out? Take the practice quiz below to see what you need to review before the test. Click on the links below to test your knowledge.