Answer:
Step-by-step explanation:
*Mixture this is the mixing of two or more substances by physical means.
*Pure substance are substance that can not be spotted by ordinary physical means.
*Compound are substance that combine by chemical means.
* Air is are mixture of gass with different percentage..they have no general molecular formula.
* This is the ability for a salty compound to ionize in water.
* Formula for water.
* Compound containing sodium , carbon and oxygen.
*This are pure substance that can not be spited by ordinary chemical means.