Ionic
Ionic + Covalent
Covalent
Chemical Reactions
Chemical Reaction 2
100
The rule that claims all elements in Group A bond to reach a full energy shell.
What is the Octet Rule?
Justification: The Octet Rule states that all elements bond to reach 8 valence electrons.
100
List the physical properties of ionic compounds including solubility, melting points, and conductivity?
What is soluble in water, high melting point, and conductive to electricity?
Justification: Ionic compounds are made up of metals and nonmetals while covalent compounds are made up of nonmetals and nonmetals. This is why the ionic compounds have the properties of metals.
100
List the physical properties of covalent compounds including solubility, melting points, and conductivity?
What is insoluble in water, low melting point, and doesn't conduct electricity?
Ionic compounds are made up of metals and nonmetals while covalent compounds are made up of nonmetals and nonmetals. This is why the covalent compounds don't have the properties of metals.
100
Predict the product side of 2CaO + 2H2O.
What is 2Ca(OH)2?
Justification: Two or more substances reacted to make one new substance.
100
Choose whether the chemical equation is synthesis, combustion, decomposition, single replacement, or double replacement?
C + O2 → CO2
What is Synthesis?
Justification: Two or more substances reacted to make a single new substance.
200
Metals and nonmetals form these and attract through this to achieve a stable octet.
What is cations, anions, and electrostatic attraction?
Justification: When bonded, metals form cations and nonmetals form anions. Together they attract through electrostatic attraction to achieve a stable octet.
200
Evaluate the ionic compound formula for potassium (K) and carbonate (CO3-2).
What is K2CO3?
Justification: K and CO3-2 when using the criss cross method makes the subscript 2 go to the K side and is rewritten as K2CO3
200
Using an E-Dot Diagram, justify how the octet rule is satisfied by sharing valence electrons in the covalent bond (H2O).
Justification: The 2 hydrogen atoms each have 1 valence electron and give it to oxygen which has 6 valence electrons. Then, the oxygen reaches a full valence shell and completes 8 valence electrons.
200
Name the seven diatomic elements.
What is H2 O2 F2 Br2 I2 N2 Cl2?
Justification: These are the seven diatomic elements.
200
According to the activity series, solve the single replacement reaction.
Cl2 + NaBr →
What is Cl2 + 2NaBr → 2NaCl + Br2?
Justification: The activity series chart shows that Chlorine is more reactive than Bromine because it is higher than it.
300
The structure ionic compounds form in relation to their elements.
What is Crystal Lattice?
Justification: Ionic compound's properties include Crystal Lattice arrangement with ionic compounds that have bonded.
300
Name this binary covalent compound, SO3.
What is Sulfur trioxide?
Justification: The S is sulfur and the O is oxygen. Also, subscript 3 is referring to oxygen and since covalent bonds end in ide, it’s written as Sulfur trioxide.
300
Generate the molar mass of NaCl.
What is 58.44 grams/mol?
Justification:
Na = 22.99g
Cl = 35.45g
22.99 + 35.45 = 58.44 grams/mol
300
Explain why balancing chemical equations is important when dealing with the law of conservation of matter and molar mass.
What are reactants must equal products or molar mass cannot be calculated?
Justification: The same mass of matter must end up in the products as started in the reactants. Also, the molar mass wouldn’t be accurate.
300
Format the products of the single replacement and double replacement equations?
Single: Zn + 2HCl →
Double: BaCl2 + MgSO4 →
What is ZnCl2 + H2 and BaSO4 + MgCl2?
Justification:
The single element replaced the second element in the compound.
The exchange of positive ions between the two compounds.
400
Predict the binary ionic compound formula for Al2O3.
What is Aluminum Oxide?
Justification: Al2O3 becomes Al6O6 with the crisis cross method then cancels out and then is read Aluminum Oxide.
400
Determine the molar mass of SO3?
What is 80.07grams/mol?
Justification: The mass of sulfur is 32.07 and the mass of oxygen is 16. Since there’s 3 oxygen atoms we multiply it by 3 and get 48.00 for oxygen. Finally, 32.07 + 48.00 = 80.07 grams/mol.
400
Using the VSEPR theory, state the molecular structure of Beryllium chloride and Boron trichloride.
What is Linear and Trigonal Planar?
Justification: The electron bond pairs and lone pairs on the center atom helped predict the shape of the molecule.
400
Devise the number to be entered on the product's side of this chemical equation.
CH4 + 2O2 → CO2 + _H2O
What is 2?
Justification: It evens the equations out and abides by the law of conservation of matter.
400
Judge whether 3CO is being oxidized or reduced in the chemical equation.
Fe2O3 + 3CO → 2Fe + 3CO2
What is Oxidized?
Justification: It's being oxidized because Iron (III) oxide is the oxidizing agent.
500
Determine the ionic compound formula for CdCl3.
What is Cadmium (Ⅲ) Chloride?
Justification: CdCl3 uses the criss cross method and brings the subscript 3 to the Cadmium so it makes Cadmium (Ⅲ) Chloride.
500
Consider the number of atoms and moles present in SO3.
What is 4 atoms and 1 mol?
Justification: 1 mole of Sulfur trioxide is composed of 1 mole of S and 3 moles of O.
S is 1 atom and O is 3 atoms, so 1 + 3 = 4 atoms total in Sulfur trioxide.
500
Using the VSEPR theory, state the molecular structure of Methane, Ammonia, and Water.
What is Tetrahedral, Trigonal Pyramid, and Bent?
Justification: The electron bond pairs and lone pairs on the center atom helped predict the shape of the molecule.
500
Implement ratios between A:B, A:C, A:D, B:C, B:D, and C:D in the balanced equation below.
C3H8 + 5O2 → 3CO2 + 4H2O
A B C D
What is 1:5, 1:3, 1:4, 5:3, 5:4, and 3:4?
Justification: Using the coefficients, a ratio can be made between compounds.
500
Contrast the difference between combustion, double replacement, and redox.
What occurs when a substance reacts quickly with oxygen?
What is the exchange of ions between two compounds?
What is when a compound has an increase or decrease in oxidation number?
Justification: The definitions of those 3 types of chemical equations justify why they are different from each other.