click below
click below
Normal Size Small Size show me how
chemical reactions
for science
| Question | Answer |
|---|---|
| combination of 2 or more elements | compound |
| a compound has different properties than the _that formed it | elements |
| rust is a combination of iron and | oxygen |
| the chemical name for rust is | iron oxide |
| the chemical formula for rust is | Fe O 2 3 |
| one substance into another is a | chemical change |
| atoms breaks old links and make new links with other atoms is a | chemical reaction |
| when substances are used to make a chemical reaction by writing is a | chemical equation |
| on a left side of a chemical equation is a _on the the right side is a_ | reactant;products |
| the total amount of mass of reactant and total amount of mass in the product that are both the same is | Law of Conservation of Mass |
| a change of color on metal changes it is becomes | tarnish |
| baking soda and vinegar is mixed it is a | chemical change |
| when 2 solutions are mixed | precipitate |
| when heat and light produces a chemical reaction reversing the reaction should | absorb energy |
| plants use a chemical reaction called | photosynthesis |
| plants and animals use a chemical reaction called | respiration |
| a chemical reaction provides living things with food and | oxygen |