Signs of Chemical Reactions

Questions

1. MultiChoice

   Which of the following is NOT a typical indicator of a chemical change?

2. MultiChoice

   What is a solid that forms when two liquids react chemically called?

3. MultiChoice

   When glowing glowsticks produce light, what type of change is occurring inside?

4. MultiChoice

   If two room-temperature liquids are mixed and the beaker feels hot, what occurred?

5. MultiChoice

   An unexpected smell coming from rotting garbage is evidence of a:

6. MultiChoice

   Which observation strongly suggests a chemical reaction took place?

7. MultiChoice

   When clear liquid A and clear liquid B are combined and turn bright yellow, what happened?

8. MultiChoice

   Fireworks exploding in the sky demonstrate which type of change?

9. WordsBox

   An unexpected ____ change is often evidence that a ____ reaction occurred.

10. WordsBox

    When a solid forms from mixing two liquids, that solid is called a ____ showing a chemical ____

11. WordsBox

    The release of heat and ____ during combustion is a clear sign of a ____ process.

12. WordsBox

    Fizzy gas ____ forming when mixing vinegar and chalk indicate a ____ gas was created.