| Chemical Reactions | ||
| #1 | Why is the sky blue? | True |
| #2 | Name two chemical reactions. | Answers may vary. |
| #3 | During a chemical reaction there can be an unexpected change in . . .? | Color, temperature, or state of matter. |
| #4 | When is color change considered a chemical reaction? | When it is unexpected. |
| #5 | Mixing vinegar and baking soda is considered a chemical reaction because why? | It produces a new substance, a gas. Carbon dioxide. |
| Physical Changes | ||
| #1 | When paper is torn, it is a physical change because why? | It does not create a new substance, the pieces are still paper. |
| #2 | Name two physical changes. | Answers may vary. |
| #3 | Why is melting a physical change? | It does not create a new substance. |
| #4 | Rust is a physical change. True or false? | False. |
| #5 | Explain what a physical change is. | A change that may cause the substance to look differently in size or shape, but does not create a new substance or unexpected change. |
| Name that change! | ||
| #1 | Chocolate melting. | Physical change |
| #2 | Mixing vinegar and baking soda. | Chemical reaction. |
| #3 | A light bulb being turned on. | Physical change. |
| #4 | Eating a doughnut | Chemical reaction. |
| #5 | Breaking a glass. | physical change. |
| More name that change! | ||
| #1 | Roasting a marshmallow. | Chemical reaction. |
| #2 | Lighting a match. | Chemical reaction. |
| #3 | Molding a piece of clay to make a sculpture. | Physical change. |
| #4 | Tearing up a piece of cloth. | Physical change. |
| #5 | Heating iron to make steel. | Chemical reaction. |
| Chemical vs. Physical!! | ||
| #1 | Firing clay in a kiln to make pottery. | Chemical reaction |
| #2 | Making popsicles. | Physical change |
| #3 | Sanding a piece of wood to build a shelf. | Physical change. |
| #4 | Mixing a green liquid and a yellow liquid to create a pink solid. | Chemical reaction. |
| #5 | Mixing two substances and having them produce heat. | Chemical reaction. |
| Final Question | |
| What is a quick test to see if a change is a physical one or a chemical reaction? | Is something completely new and different produced, or is the substance still the same, but with a different appearance. |