8. Directions identify the following iſ the given properties is a substance or mixture. Write SUBSTANCE if it is a property of substance and MIXTURE i it is a property of misturs. 11. It is a combination o two or more substance. 12. It cannot be separated by physical means. 13. li is made up of one kind of matter. 14. li can be separated by physical means. 15 it has a definite proportion. 16. It is a compound. 17. It is an element. 18. li can be combine chemically, 19. It cannot be combined chemically, 20. It has no definite proportion.