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Chapter 2 Flashcards
Question | Answer |
---|---|
What is the difference in endothermic and exothermic? | Endo thermic is heat going in while exo thermic is heat coming out. |
How can you tell the difference between physical and chemical changes? | Physical changes change the make up of the substance. Chemical changes just show a change in size, smell, color, or a change in state. |
Give an example of a physical property. | Bitter taste |
Give an example of a chemical property. | Something that reacts with water to form a gas |
How do you know if a chemical change has occured? | When a substance reacts to form one or more substance |
How do you know if a physical change has occured? | There is a change in size, color, smell or state. |
What do you call the change in state from a solid to a liquid? liquid to solid? | Melting, Freezing |