Valentine's (atom) bonding

Ionic 1-4

300

Element x is from group 7A of the periodic table. If it were to become an ion and seek a full octet of electrons, what would its charge be __?

-1

300

On a piece of paper, illustrate or describe the result of electrons in the following diagram if these 2 elements were to bond:

    _.                                                

:     Cl     :                   ^{.   Na}  

    ^{.       .}                                         

              

   _{.        .}                             

:     Cl     :             Na 

    ^{.       .}                             

300

Substance x is characterized as being brittle, a poor conductor of heat and electricity, and dull. Is element x a metal or a nonmetal

non-metal

300

what is the name and formula of the binary ionic compound for elements aluminum and sulfur. No half-credit

Aluminum sulfide: Al2S3

Ionic 5-7 + Covalent 1

300

What is the formula for: iron(III) Flouride

FeF₃

300

what is the formula for chromium (III) carbonate?

Cr₂(CO₃)₃

300

calculate the molar mass of Cr2O3. Round to the nearest tenth

152g

300

Which of the following is most likely a covalent compound?

compound A has a high melting and boiling point. 

compound B has a crystal structure

compound C is a liquid at room temperature

Compound D conducts electricity in water

compound C

covalent 2-5

300

illustrate or describe a structural formula (model) of dihydrogen monoxide (water)

_{.   .}

H --  O  -- H

^{.   .}

300

name and write the formula for a phosphorus atom covalently bonded with 3 bromine atoms

PH3, phosphorus bromide

300

What is the molar mass of nitrogen triflouride (round to the nearest tenth)

71g

300

What are the amounts and types of atoms in 3 molecules of tetraiodine nonoxide

12 atoms of iodine and 27 atoms of oxygen

cov. 6 + chem re. 1-3

300

Covalent compound x has 3 single bonds, and it has 1 lone pair. What shape does covalent compound x take?

trigonal pyramidal

300

hydrogen chloride comes into contact with pure copper wire. Write the complete chemical equation

Cu + HCl ---> NR

300

predict the products of the following reaction

HCl + Na --->

(be careful of diatomic elements, and double points if you can name them all!)

NaCl + H₂

300

in a chemical reaction, if the product 3H₂O is observed to form, what must appear on the reactants side of the equation

6 hydrogens and 3 oxygens

chem re. 4-8

300

balance the following equation by filling in the coefficiants

_Ba(OH)₂ + _AlBr₃ ---> _Al(OH)₃ + _BaBr₂

3Ba(OH)₂ + 2AlBr₃ ---> 2Al(OH)₃ + 3BaBr₂

300

Fill in the coefficients to balance the equation

_Al + _O₂ ---> _{_}Al₂O₃

4Al + 3O₂ ---> 2Al₂O₃

300

Classify the following reactions. Credit for correctly matching 3, double points for matching all correctly

1-   Na₂O + H₂O → 2 NaOH 

2-  2H₂O → 2H₂ + O₂

3-  Zn + CuBr₂ → ZnBr₂ + Cu

4-  Ag(NO₃) + KCl → AgCl + K(NO₃)

5-  CH₄ + 2O₂  → CO₂ + 2H₂O

1.synthesis

2.decomposition

3.single replacement

4.double replacement

5.combustion

300

Predict the products for the following equation:

NaCl + Br2 ---> __

NR, Cl is higher on the activity series so Br can’t replace it

350

predict the products of the following reactions

1. Ca + HCl ---> ?

2. NaCl + Ag(NO3) ---> ?

CaCl₂ + H₂

AgCl + Na(NO₃)