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Matter cannot be created or destroyed, and it never changes. True or false?
False
What is the law of conservation of mass?
Matter cannot be created or destroyed.
Chemical or physical change?
Chemical
Chemical or physical change?
Physical
What are the indicators that a chemical reaction happened? (at least 2)
Gas produced (bubbles), color change, heat or light produced
This is a reaction that absorbs heat
Endothermic
This is a reaction that gives off heat.
Exothermic
In this type of change, it can be reversed back to what you started with.
Physical change
In this type of change, it cannot be reversed (is permanent)
Chemical change
A type of change that results in a new substance.
Chemical change
A type of change that does NOT make something new.
Physical change