Science 9

Today we did a mini lab to practice chemistry.   We got some silver out of our reaction!

Next we turned in our review questions and all the text book questions....Yes there were a lot of them! 

Answers to some of the Practice Test:  Modified True/False 1)F (8 electrons max)   2)F (lost electrons)    3)F (alkali metals)    4)T     5)F (Halogen Family)    6)F ammonium chlorite    7)T

Multiple Choice:    1)D    2)D    3)A    4)D    5)D    6)A    7)C    8)+2    9)D    10)A     11)D
12)D

Short Answer:  1a) protons=15    electrons=18     neutrons = 14

b) Phosphorus-29

2) electrons are gained in the outer shell.  Non-metal gets a negative charge

3 and 4)  Make sure you can draw the Bohr models.

5a) chemical change
b) physical change
 

6a) CuCl₂

6b) Na₂NO₃

6c) Fe(NO₃)₃

6d)(NH₄)₂C₂O₄

6e)PbBr₄

_{7a)  Copper (I) iodide       7b) zinc nitrate      c) manganese (IV) carbonate    d) calcium phosphate}       

_{e) sodium fluoride}