Periodic Table & Atomic Structure
What is the maximum number of electrons in the third shell?
18
What type of bond forms between two non-metals?
Covalent
Balance H₂ + Cl₂ → HCl
H₂ + Cl₂ → 2HCl
What term describes the minimum energy needed for a reaction?
Activation Energy
What is the term for a compound that does not dissolve in water?
Which group contains elements with full valence shells?
18
What is the name of the compound with formula NH₃?
Ammonia
What is the total number of atoms in H₂SO₄?
7
What type of reaction is: CaCO₃ → CaO + CO₂?
Decomposition
Is PbI₂ soluble or insoluble?
Insoluble
What trend decreases down Group 17?
Electronegativity
What is the charge on the sulfate ion?
What is the state of BaSO₄ in a precipitation reaction?
Solid
What type of reaction is: 2Mg + O₂ → 2MgO?
Synthesis
What is the precipitate in: BaCl₂ + Na₂SO₄ → ?
BaSO₄
What is the term for elements with similar chemical properties in a column?
Group
What is the formula of calcium nitrate?
Ca(NO₃)₂
Balance the combustion reaction of propane.
C3H8+O2→CO2+H2O
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Which 5 factors increases both frequency and energy of collisions?
Temperature, Concentration, Surface Area, Agitation, Catalyst
Solutions of barium chloride and sodium sulfate are combined.
the balanced chemical equation including state symbols.
BaCl₂ (aq) + Na₂SO₄ (aq) → BaSO₄ (s) + 2NaCl (aq)
What is the electron configuration of a fluoride ion?
2,8
What is the name of the compound with formula PCl₅?
Phosphorus pentachloride
Balance the reaction between iron(III) oxide and carbon.
Fe2O3+C→Fe+CO2
2Fe₂O₃ + 3C → 4Fe + 3CO₂
What type of reaction is: Zn + CuSO₄ →
And will the reaction occur?
Single Displacement
Yes
Solutions of lead(II) nitrate and potassium iodide are mixed.
Write the balanced chemical equation including state symbols.
Pb(NO₃)₂ (aq) + 2KI (aq) → PbI₂ (s) + 2KNO₃ (aq)