Question | Answer |
Is lighting a match a chemical or physical change? | Chemical change |
What are some examples of chemical changes? | A piece of metal rusting, wood burning, or a batter being baked |
What is a chemical reaction? | A release of energy as a result of two or more chemicals mixing together |
What are some examples of physical change? | Clay being molded into a shape, ice being melted, or a piece of paper being ripped in half |
What is a physical change? | A change in a chemical's state of matter or shape |
What is a chemical change? | A change in a chemical's identity and/or properties |
What subatomic particle is responsible for chemical reactions? | Electrons |
What is a mixture? | A substance made up of two or more chemicals being mixed together |
Is a car being dented a chemical or physical change? | Physical |
What are some ways that Styrofoam can undergo chemical changes? | Burning it or putting acetone on it |
What are some ways that Styrofoam can undergo physical changes? | Ripping it, carving it, or smashing it |
Is food being digested a chemical or physical change? | Chemical |
What kind of change is baking a batter (of some sort)? | Chemical |
What are some signs of a chemical reaction? | Production of gas, color change, a precipitate is formed, light is produced, and/or heat is produced |
Melting ice is a chemical change (True or False). | False |
Is saltwater a mixture (it's salt and water)? | Yes |
How is burning a book a chemical change? | It changes the book's properties and it's chemical identity |
Is putting water through electrolysis a chemical change? | Yes |
What kind of change is boiling water and why? | Physical, the state of matter has been changed from liquid to gas |
What is Andy N's real name? | Jartin |