Across
- 1. it is a gas that your body needs to function properly. Your cells need oxygen to produce energy.
- 5. changing their molecular structure and bonds, into other substances called products.
- 6. a substance or compound added to a system to cause a chemical reaction.
- 8. a chemical reaction, shows the substances that react and the substances that originate
- 10. a work of fiction in a romance between two or more characters in it.
Down
- 1. is the process by which the elements of a system undergo chemical changes of a transformation.
- 2. It is the action that is exercised reciprocally between two or more objects, people, energies or entities.
- 3. They are transformations that can change the state and appearance of any material, but never its chemical nature.
- 4. it is a subatomic particle with a negative elementary electrical charge.
- 7. electric accumulator or simply battery or accumulator
- 9. it is an eligible, viable and repeatable option that the offer makes available through its use or consumption.