422-004+chapter+1+problem+set+answers

- Lanthanides. 7. The difference between a compound and a mixture is that a mixture's ingredients retain their own properties and identities, while a compound fuses the matter and it becomes chemically bonded. 9. The difference between intensive and extensive properties is that extensive properties depend on the amount of matter present, while intensive do not. 10. A chemical property is a property that becomes apparnt when a substance is subject to a chemical change. The most aparent examples of chemical changes and therefor properties are: ability to rust, melt, ignite, or explode. 11. A chemical change is one where usually the origonal substance is lost, and you are not able to regain the matter you had before whatever it was subjected to, happened. In a physical change, you can regain the matter and usually there wont be fire involved. 13. A change in state is when something like Ice, which is a solid, turns into water through a process called "melting". This is the most common change in state, and a change in state encompasses whenever a solid, liquid, gas, or plasma turn into... a solid liquid gas or plasma. 14.The reactants are Potassium and water and the products are potassium hydroxide and hydrogen. 15. If differnt parts of a sample material are of a differnt composition, then that matter is not entirely one piece of the same matter, and has been partly fused with anouther type. 18. Element X is probably a non-metal, while Element Z is a metal. 19. A. K- Potassium- nonmetal B. Ag- Gold- Metal C. Si- Silicon- nonmetal D Na- Sodium- nonmetal E. Hg- Mercury- Metal F. He- Helium- Noble Gas 21. a.C- Carbon -2, 14 b.Ar- Argon- 3, 18 c.Cr- Chromium- 4, 6 d. Ba- barium- 6, 2 22. A physical property is any property that is not chemical. That being said, a physical property is a property such as luster, density, wieght, color, anything that does not have to do with a chemical change. 1. C 9. B