Identify the correct ionic formula formed between aluminium and oxygen:, Al₂O₃, AlO, Al₃O, AlO₂, What formula represents ammonium phosphate?, (NH₄)₂PO₄, (NH₄)₃PO₄, NH₄PO₄, NH₄(PO₄)₂, Sodium and oxygen combine to form which ionic compound?, NaO₂, NaO, Na₂O, Na₃O, Magnesium chloride has which chemical formula?, MgCl, Mg₂Cl₃, Mg₂Cl, MgCl₂, Which rule explains higher melting points for strong ionic lattices?, Strong ionic bonds cool down substances faster, Strong ionic bonds add extra electrons to ions, Strong ionic bonds turn solids into gas instantly, Strong electrostatic attraction requires more heat energy to break, Down Group 1 alkali metals, what happens to reactivity?, Reactivity decreases, No change, Reactivity increases, Metals stop reacting, Alkali metal atoms tend to do which action during reactions?, Lose electrons, Gain electrons, Share protons, Absorb neutrons, In the reaction 2Na + Cl₂ → 2NaCl, sodium metal undergoes:, Neutralization, Oxidation, Condensation, Reduction, In the same reaction 2Na + Cl₂ → 2NaCl, chlorine gas undergoes:, Oxidation, Reduction, Sublimation, Dissolving, Propane contains how many hydrogen atoms per molecule?, 6, 11, 8, 3, Methane only contains which bond category?, Metallic bonds, Ionic + covalent mix, Ionic bonds, Covalent bonds, Which statement about covalent shared electrons is correct?, Shared electrons are attracted to both atomic nuclei, Shared electrons exist outside the atomic nuclei entirely, Shared electrons stick only to one atom’s nucleus, Shared electrons repel both atomic nuclei, A neutral oxygen atom has how many electrons total?, 10, 6, 16, 8, Which statement about covalent bond formation is true?, Forms between two metal atoms, Forms only between two non-metal atoms, Forms between a metal atom and non-metal atom, Forms only inside ionic lattice structures, Double bonds in O₂ hold two shared electron pairs. How many total electrons are shared?, 4, 2, 8, 6, Breaking chemical bonds always requires energy, so bond breaking is:, Exothermic, No energy transfer, Endothermic, Redox process, Forming new chemical bonds releases thermal energy, making bond formation:, Exothermic, Catalytic, Endothermic, Neutral, In the thermal energy formula q = mcΔT, what does ΔT represent?, Specific heat capacity, Total heat energy, Change in temperature, Mass of substance, Which acid is classified as a weak acid?, HCl, Vinegar acid (ethanoic acid), HNO₃, H₂SO₄, Sodium carbonate (Na₂CO₃) falls into which category?, Weak alkali, Strong acid, Strong alkali, Neutral salt, Higher solution concentration increases reaction rate because:, Particles gain more kinetic energy, Activation energy automatically lowers, Particles collide more frequently, Catalysts form inside the solution, Higher temperature speeds reactions because particles:, Form larger solid lumps, Move faster with more energetic collisions, Move slower and collide softer, Reduce their total mass, Large solid chunks slow down reactions compared to powder because chunks have:, Smaller surface area, Larger surface area, Higher temperature, Lower concentration, Activation energy is defined as:, Total energy released after a reaction finishes, Maximum energy stored inside chemical bonds, Energy only found in catalyst materials, Minimum energy particles need to react when colliding, Increasing pressure on gas-phase reactions speeds rate because:, Particle temperature rises instantly, Gas particles change into liquid automatically, Gas particles are packed closer together, more collisions, Activation energy disappears completely, What effect do catalysts have on a reaction’s total enthalpy change (ΔH)?, No change to ΔH, Decrease ΔH value, Increase ΔH value, Flip exothermic reactions to endothermic, Which statement about catalyst function is false?, Catalysts lower activation energy, Catalysts do not alter final product amounts, Catalysts create an alternative reaction pathway, Catalysts get fully used up during the reaction, Hydrogen chloride (HCl) dissolved in water acts as:, Strong alkali, Strong acid, Weak acid, Neutral salt, Sodium chloride (NaCl) solution has which pH property?, Neutral, Weakly alkaline, Strongly alkaline, Strongly acidic, Which physical change absorbs heat energy from surroundings?, Freezing, Deposition, Melting, Condensation

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