Chemical bonds
Covalent compounds 300 everything else is Chemical bonds
Covalent Compounds
Ionic Compounds
Ionic Compounds pt2
100
What are the seven diatomic elements?
H2 O2 F2 Br2 I2 N2 Cl2
100
Determine the number of moles and atoms present in an ionic or covalent formula? (CO2)
carbon dioxide 2 moles of oxygen and 1 mole of carbon
The atoms are 1 of carbon 2 of oxygen
100
When looking at Al3+OH determine what would be the name and the formula for this compound?
Al(OH)3
Aluminium hydroxide
200
By understanding the metal activity series can you determine if
Kbr+Zn occurs
It will not occur there is no reaction
Zn cannot replace k because when you look at the table you can see it is less reactive
200
Balance a chemical equation?
CH4+Cl2----> CCl4 +HCl
CH4+ 4Cl2---->CCl4+4HCl
200
Name and write the chemical formula for a binary molecular covalent compound H20, PCl3, HCl,CH4
H2O is dihydrogen monoxide,
PCl3 is phosphorus trichloride
HCl is Hydrogen monochloride
CH4 is carbon tetrahydride
200
When evaluating the periodic table what would be the common charges of groups 1?
the periodic table is arranged in a form where you can see when moving to the right the charge goes up one. This is an evident pattern that always follows for the table
200
When looking at Ba2+ OH- determine what would be the name of the formula for this compound?
When looking at Ba2+ OH- determine what would be the name of the formula for this compound?
Ba(OH)2
Barium Hydroxide
When putting the two ions together the number cancels out and stays and this would be your answer
300
What is the significance of balancing chemical reactions equations using the law of conservation of matter and molar mass?
In any chemical reaction it is a universal rule that matter cannot be destroyed nor created. Balancing equations always need an equal amount of atoms on the products and reactants side to be considered truly balanced. Once an equation is balanced then it can be seen as an accurate representation of the law of conservation and molar mass.
300
predict molecular structure for molecules using the valence shell electron pair repulsions?
Co2
CH4
NH3
BH3
H2O
CO2 is linear
BH3 is a trigonal planar
CH4 is a tetrahedral
NH3 is a trigonal pyramid
H2o is bent
300
illustrate how the octet rule is used by sharing valence electrons during the formation of covalent bonds.
I showed CH^4 and NH^3 in a structural formula and dot diagram
300
How would you determine the molar mass of sodium sulfide?
22.99(2)+32.07+16.00(4)=142.04g
400
Predict the products of a single and double replacement?
What's the product of Fe+CuSO4?
What's the product of AgNO3+KCl
the first product would be FeSO4+Cu
The second product would be AgCl+KNO
400
Write a chemical equation from a word equation or observational data and what compounds and elements do they involve?
elements :Silver(Ag) Oxygen(O) Nitrogen (N) Sodium(Na) Chlorine(Cl)
Compound: NO3 =Nitrate NaCl= Sodium Chloride
400
Compare and contrast physical properties of ionic and covalent compounds?
Ionic compounds have higher melting and boiling points They consist of a metal and a non metal
They also conduct electricity in water, but tend to have no definite shape. Ionic compounds are generally hard and brittle
they are solid at room temperature, and are also fairly soluble.
Covalent compounds have low melting and boiling points. They consist of strictly non-metals
covalent compounds generally do not conduct electricity in water, but they do have a definite shape. Also covalent compounds tend to be softer and more flexible. They are also not very soluble in water
400
When looking at copper and chloride how would you determine the formula and name?
Copper(l) chloride
CuCl
When combining the two ions and putting them together the numbers are set to cancel out and from there stay which will result in your answer.
400
How would you compare and contrast the properties of an ionic compound and its elements?
Compound melt and boil at lower temperatures than ionic compounds because of these weaker forces. Molecular compounds vaporize at room temperature more easily than ionic compounds
500
Create ratios from the coefficients in balanced chemical equations
How would you create ratios from balanced equations using coefficients?
In order to balance an equation you need to make sure the number of atoms on each element is equal on both sides. In order to make both sides equal you will need to multiply the number of each atoms using coefficients to make them equal.convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula
500
Classify chemical reactions as synthesis,combustion,decomposition,single replacement.
Zn+Cucl2---->ZnCl2 +cu
BaCl2+MgSO4--->BaSO4+MgCl2
CH4+O2--->H2O+CO2
2AgBr--->2Ag+Br2
2CO+O2----> 2CO2
Single replacement-
Zn+Cucl2---->ZnCl2 +cu
double replacement
BaCl2+MgSO4--->BaSO4+MgCl2
combustion
CH4+O2--->H2O+CO2
decomposition
2AgBr--->2Ag+Br2
synthesis
2CO+O2----> 2CO2
500
Determine the molar mass of a covalent compound NH3
NH3 you find the atomic mass of each one so the mass of nitrogen is 1.000794 and for hydrogen its 14.0067
no you know to multiply (1) nitrogen atom with no subscript (14.0067)
and 3 hydrogen atoms( the subscript is 3)times 1.00794
these total are 14.0067 and 3.02382
add them up and the molecular mass is 17.0305