water b 2 flashcards pp.29-39

Water B 2 Flashcardspp.29-39

Refer to pg. 33 in the textbook for the Common Ions chart to do some of

these problems.

Write a correct formula for:

Copper (II) sulfide

CuS

How many nitrogen atoms are on the reactant side of this equation?

N2 + 3 H2 2 NH3

two nitrogen atoms;2-N’s

Write a correct formula for:

Iron (III) selenate

Fe2(SeO4)3

Name: FeS

Iron (II) sulfide

(Fe+2 S-2)

Write a correct formula for:

Lead (II) hydroxide

Pb(OH)2

Do an atom inventory for this equation.

2N2 + 5 O2 2 N2O5

Atoms:

Reactants Products4-N 4-N

10-O 10-O

Name: Ca(NO3) 2

Calcium nitrate

Do an molecule inventory for this equation.

2N2 + 5 O2 2 N2O5

Molecules:

two-N2

five-O2

two-N2O5

Name: (NH4)2CO3

Ammonium carbonate

Give an example of an anion.

-SO4-2, Cl-1, O-2, etc.

Define what a product is.

-material on the right side of the equation-it’s what is being “made” in the reaction

Why was distilled water used as a control in the Water Testing lab?

-it was known not to contain any ions.-so we could compare the tap water results to a negative test.

How many hydrogen molecules are on the reactant side of this equation?

N2 + 3 H2 2 NH3

Three hydrogen molecules;

3-H2

Write a correct formula for:

NH4 and SO3

(NH4 )2SO3

Write a correct formula for:

Al and HCO3

Al(HCO3 )3

Name: HgCl2

Mercury (II) chloride

(Hg+2 Cl-)

Name these elements and list how many of each there are.

NaHCO3

Na-sodium-1

H-hydrogen-1

C-carbon-1

O-oxygen-3

Give an example of a cation.

Fe+3, Na+1, Ca+2, etc.

Define what a reactant is.

-it is the material on the left side of an equation.

-it’s the material you start with.

Define ion.

-a particle that has gained or lost an electron.

Define precipitate.

-a solid material that forms when two liquids are mixed.

-cloudiness in a liquid.

List the ions that our tap water contains.

-chlorine, Cl-1

-sulfate, SO4-2

List what we know so far in the Riverwood fish kill.

-water has been shut off-no microorganisms have been identified-no toxins detected-all kinds of fish found dead below the dam in the river