Across
- 5. a representation of a chemical reaction using symbols of the elements to indicate the amount of substance
- 6. a substance that takes part in and undergoes change during a reaction
- 7. is a processes in which chemical species break up into simpler parts
- 8. a type of chemical reaction where two compounds react, and positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
- 9. a reaction in which one element is substituted for another element in a compound
Down
- 1. a type of element ordering system
- 2. a reaction in which two reactants combine to form one product.
- 3. a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.
- 4. a substance obtained from another substance through chemical change.