HW #!: MATTER

1. Has definite melting point
4. possess Tyndal effect, with Brownian movement
6. contains two or more elements or kinds of atoms combined chemically in definite proportion by mass, can be separated by chemical means only
8. soapy or slippery in water solutions
11. Has low density, exerts pressure
14. substances composed of two or more elements or compounds which are not chemically combined
16. compounds that contain carbonand which comes from living or organicsources like plants and animals
17. perfectly uniform and definite in composition, can either be an element or a compound
18. an electrolyte that yields neither hydrogen or hydroxide from the dissolve molecules
20. simplest form of a substance that cannot be decomposed by simple chemical means, contains only one kind of atom

2. consist of oxygen and one other element
3. homogeneous mixture of two or more substances
5. heterogeneous mixture of two or more substances
7. change in the extrinsic properties of a substance without changing its chemical composition
9. a mixture consists of only one phase
10. a mixture consists of only one phase
12. compounds that do not contain carbon, and which usually are found in mineralsand earthy materials.
13. change in the intrinsic properties and constitution of the substance
15. contain hydrogen which is replaceable by a metal
19. Has specific gravity - the lightness and heaviness of the specimen substance compared to the reference substance