Ionic Questions
Determine the common charges of group A elements (Sodium, Potassium, Magnesium, Aluminum)
1A: Sodium and Potassium
2A: Magnesium
3A: Aluminum
Answer
1A: +1
2A: +2
3A: +3
1.Name the following Compound: NH4NO3
2. Write the chemical formula for Sodium Hydroxide
Ammonium Nitrate
NaOH
Name 2 different physical properties about each type of compound: Ionic and Covalent.
Ionic: conducts electricity when they are dissolved in water, high melting and boiling points, hard and brittle
Covalent: poor electrical and thermal conductivity, soft and brittle, low melting and boiling points
Is the following equation being Oxidized or Reduced?
4Fe + 3O2 ---> 2Fe2O3
The chemical equation is being oxidized as a result of iron being exposed to air, and causing the iron to rust.
What would this chemical equation look like in word/written form?
Na + H2O ------> NaOH + H2
Sodium reacts with water to produce sodium hydroxide and hydrogen gas
Name the steps to how an ionic compound forms and what happens in those steps:
an ion forms from the addition or removal of electrons
a cation forms when a metal loses electrons
an anion forms when a nonmetal gains those electrons
Determine the molar mass of the ionic compound: NH4NO3
80.05 amu
If a calcium atom has 7 electrons how many does it need to become stable?
1
Chemical Reaction:
Match the following terms to the correct type of Equation (Synthesis, Combustion, Decomposition, Single Replacement, and Double Replacement).
NaCl ------> Cl + Na
2. 2NO + O2 ---> 2NO2
3. CH4 + 2O2 ----> CO2 + 2H2O
4. Na2S + HCl -----> NaCl + H2S
5. Mg + CuSO4 ----> Cu + MgSO4
Decomposition
Synthesis
Combustion
Double Replacement
Single Replacement
What are the 7 diatomic Elements?
Hydrogen (H2), Nitrogen (N2), Fluorine (F2), Oxygen (O2) , Iodine (I2), Chlorine (Cl2), Bromine (Br2)
Name 2 similarities and 1 difference between the following elements and the ionic compound:
BaO (Barium and Oxygen)
Similarity: both are extremely reactive, colorless
Difference: Barium is a metal, oxygen is a gas
Identify the name for N2O4
Dinitrogen tetroxide
When does a single replacement reaction occur?
It occurs when a metal higher on the metal activity series is replacing the one lower in the series.
Why is it important to balance chemical equations and relate it to the Law of Conservation of Mass and Molar Mass?
An unbalanced equation only tells which compounds react with each other and what the product is. A balanced equation tells how many molecules of each reactant, and how many molecules of a product in a reaction.
Write the the chemical formulas for the following Binary Ionic Compounds:
Iron (iii) iodide
Calcium Iodide
Iron (iii) Iodide= Fel3
Calcium Iodide= Cal2
Calculate the molar mass of the following:
C6 H12 O6
180 or 156g/mol
Predict the following chemical equations:
K+ NaCl
NaNO3 + KCl
Products = KCl + Na
Products = KNO3 + NaCl
Balance the following chemical equations:
Fe+ Cl2 = _____
Na2CO3 + HCl = _____
FeCl3
2NaCl + H2O + CO2
Name the elements that have more than one charge (transition elements).
Co2+
Fe3+
Cobalt 2+
Iron 3+
Match the molecular structure to the correct chemical formula: (Linear, Bent, Trigonal Planar, tetrahedral, Trigonal Pyramid)
CO2 has a _______ shape
BF3 has a _______ shape
CH4 has a ______ shape
NH3 has a ______ shape
H2O has a _______ shape
Linear
Trigonal Planar
Tetrahedral
Trigonal Pyramid
Bent
Determine the number of atoms and moles present in the following ionic compound:
CaCl2
Atoms: 3
Moles: 1
What is the difference between the following chemical reactions: (Combustion, Double Replacement, and Redox {Oxidation and Reduction})?
Combustion- a substance reacts with oxygen from the air and transfers energy to the surroundings as light and heat.
Double Replacement- occurs when parts of two ionic compounds are exchanged, making two new compounds
Redox (Oxidation and Reduction)- reactions that involve the transfer of electrons between chemical species
Solve the following Mole Ratio:
How many moles of ammonia are produced if 4.20 moles of hydrogen reacted with an excess of nitrogen?
4.20 mol H2 x 2 mol NH3/ 3 mol H2 = 2.80 mol NH3