Introduction to Chemical Changes

Questions

1. MultiChoice

   Which of the following is a chemical change?

2. MultiChoice

   What is the key feature of a chemical change?

3. MultiChoice

   Which observation indicates a chemical change has occurred?

4. MultiChoice

   What type of change takes place when bread is toasted?

5. MultiChoice

   Why is souring milk classified as a chemical change?

6. MultiChoice

   Which everyday event involves a chemical change?

7. MultiChoice

   When vinegar reacts with baking soda to form carbon dioxide bubbles, this is a:

8. MultiChoice

   What evidence proves that wood burning is a chemical change?

9. WordsBox

   A ____ reaction occurs when matter transforms into a ____ substance with different properties.

10. WordsBox

    When iron ____ it combines with oxygen to form iron ____

11. WordsBox

    The formation of ____ bubbles during a reaction is a clear sign of a ____ change.

12. WordsBox

    Baking a ____ involves chemical changes that cannot be easily ____