Dr.Matt Test 2 Kahoot & Test Review

Name the polyatomic atoms and their formulas

(idk)

Calcium phosphate, Ca3(PO4)2, contains phosphate ions. What is the charge on the phosphate ion?

-3

Lead, Pb, is a potentially toxic element. Which sample from the question above would be potentially the most toxic? A. 1 mol Pb B. 1 mol PbCl2 C. 1 mol PbCO3 D. 1 mol PbSO4

A. 1 mol Pb

Which has more moles of molecules? A. 1.0 g methanol, CH4O B. 1.0 g ethanol, C2H6O C. 1.0 g propanol, C3H8O D. 1.0 g butanol, C4H10O

A. 1.0 g methanol, CH4O

Which has more moles of metal atoms? A. 5.0 g NaF B. 5.0 g NaCl C. 5.0 g NaBr D. 5.0 g NaI

A. 5.0 g NaF

Restaurants usually provide small packets of sugar to sweeten coffee or tea. Each sugar packet contains approximately 1.0 g of sucrose, C12H22O11. How many moles of sucrose does this represent? A. 342.3 mol B. 0.0029 mol C. 1.0 mol D. 6.02 x 1023 mol

B. 0.0029 mol

How many atoms are there in 1 mole of CO2? A. 1.80 x 1023 atoms B. 6.02 x 1023 atoms C. 1.80 x 1024 atoms D. 6.02 x 1024 atoms

C. 1.80 x 1024 atoms

Which sample has the highest mass? A. 1 mol Pb B. 1 mol PbCl2 C. 1 mol PbCO3 D. 1 mol PbSO4

D. 1 mol PbSO4

There are 8.0 mol of H atoms in 2.0 mol of CH4O molecules. How many moles of H atoms are there in 2.0 mol of C2H6O molecules? A. 1.0 mol B. 2.0 mol C. 6.0 mol D. 12.0 mol

D. 12.0 mol

What is the mass of 5 mol of iron(III) chloride, FeCl3? A. 126.8 g/mol B. 634.0 g/mol C. 162.2 g/mol D. 811.0 g/mol

D. 811.0 g/mol

Suppose you have a mixture of sodium chloride, NaCl, and carbon, C. Explain how you can use water to separate the two substances.

Dissolve the NaCl in water and filter out the solid carbon.

In the copper cycle lesson, you saw that nitrogen dioxide, NO2(g), formed when copper, Cu(s), was dissolved in nitric acid. How would you classify the bonding in NO2(g)? Explain.

It's a molecular covalent compound that's in the gas phase.

Three examples of ionic compounds with a metal-to-nonmetal ratio of 3:1.Name the number of valence eletrons and name the compound

Na3P sodium phosphide 8 valence electrons K3N potassium nitride 8 valence electrons Rb3N rubidium nitride 8 valence electrons

Definition for LD50

The lethal dose of a substance that causes the death of half of the test subjects exposed to it

Predict whether each substance listed below will conduct electricity, dissolve in water, and/or conduct electricity once it has dissolved. Explain your thinking in each case. a. C3H6O(l), acetone b. Zr(s), zirconium c. AgNO3(s), silver nitrate d. AgCu(s), sterling silver

a) no it will not conduct yes it will disolve in water it will not conduct when dissolved andMolecular covalently bonded substance, but liquid phase. b) will conduct, won't dissolve in water and it is a metal. c) it won't conduct, it will disolve, it will conduct when dissolved because It's an ionic compound that's water soluble d) yes it will conduct, not it will not dissolve and it is a metal alloyDetermine the type of bonding in each substance. a. zinc, Zn(s) metallic b. propane, C3H8(l) molecular covalent c. calcium carbonate, CaCO3(s) ionic

Determine the charge on the transition metal cation in each of the compounds listed below. Then name each compound. a. Cr2S3 b. CuSO4 c. Ni(NO3)2 d. FeCO3 e. CuCl2 f. Co(OH)3

a. Cr+3 chromium(III) sulfide b. Cu+2 copper(II) sulfate c. Ni+2 nickel(II) nitrate d. Fe+2 iron(II) carbonate e. Cu+2 copper(II) chloride f. Co+3 cobalt(III) hydroxide

Write the chemical formula for each compound listed below: a. lithium hydroxide LiOH b. potassium nitrate KNO3 c. magnesium carbonate MgCO3 d. ammonium sulfate (NH4)2SO4

a. LiOH b. KNO3 c. MgCO3 d. (NH4)2SO4

Write the cation and anion in each compound below, then determine the correct chemical formula. a. nickel(II) sulfide b. copper(II) nitrate c. iron(II) nitrate d. cobalt(II) sulfate e. chromium(VI) oxide f. iron(III) carbonate

a. cation = Ni+2, anion = S—2 , formula = NiS b. copper(II) nitrate cation = Cu+2, anion = NO3 —1 , formula = Cu(NO3)2 c. iron(II) nitrate cation = Fe+2, anion = NO3 —1 , formula = Fe(NO3)2 d. cobalt(II) sulfate cation = Co +2, anion = SO4 —2 , formula = CoSO4 e. chromium(VI) oxide cation = Cr +6 , anion = O—2 , formula = CrO3 f. iron(III) carbonate cation = Fe+3 , anion = CO3 —2 , formula = Fe2(CO3)3

Write the name for each ionic compound listed below:a. MgSO4 b. Al2(CO3)3 c. NH4OH d. KCl

a. magnesium sulfate b. aluminum carbonate c. ammonium hydroxide d. potassium chloride

. Write the electron configuration for each of the elements below: a. silver b. oxygen

a. silver 1s22s22p63s23p64s23d104p65s24d9 b. oxygen 1s22s22p4

Determine the type of bonding in each substance. a. zinc, Zn(s) b. propane, C3H8(l) molecular c. calcium carbonate, CaCO3(s)

a.metallic b.molecular covalent c.ionic

What makes a substance less toxic?

the amount of mg/kg, the more there is the more toxic it is.

What makes a sample have more atoms

the density within it