6:16 PM Mon Apr 19 +
Assessment
Chapter Test B
a
Chapter: Chemical Formulas and Chemical Compounds
PART I In the space provided, write the letter of the term or phrase that best
completes each statement or best answers each question.
1. Changing a subscript in a correctly written chemical formula will
change the electron configuration of that element
b. change the charges on the other sons in the compound.
c. change the formula so that it no longer represents the same compound.
d.
have no effect on the formula
2. Using the Stock system of nomenclature, Cr2(SO4)3 is named
chromium(II) sulfate.
b.
chromic sulfate.
dichromium trisulfate.
d.
chromium(III) sulfate.
a.
C.
3. In a polyatomic ion, the algebraic sum of the oxidation numbers of all
atoms is equal to
a.
0.
b.
10.
c.
the number of atoms in the ion
the charge on the ion.
4. The first part of the name of a binary ionic compound is the
cation
polyatomic ion

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance