Across
- 4. burning of substance with oxygen
- 5. reacting with oxygen
- 6. a gas that caused limewater to form a white solid upon bubbling of the gas.
- 10. substance that reacts with one another before a chemical change occur
Down
- 1. substances that are formed after a chemical change occurs.
- 2. a gas that caused a lighted splint to extinguish with a 'pop' sound.
- 3. reaction of acids and alkali to produce salt and water.
- 7. Change cannot be _________ for a chemical change.
- 8. mass and number of atoms are ________ during a chemical reaction.
- 9. a product that is formed in all reactions of acids.