Wks 3.1 - classifying matter (2 pages)
complete the blank labels in the diagram below.
can be separated
physically
e
definite composition s
(homogeneous)
mixture of
substances
variable composition
can be separated
chemically
(examples: water
sodium chloride)
(examples: carbon
hydrogen, oxygen)
uniform
also called a solution
nonuniform:
distinct phases
in alamiananeous mixture heteropencous mixture, compound, or an element.

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

How many moles of kci are produced from 2.50 moles k

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.