Edexcel Chemistry Quickfire: Rates & Bonding

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Edexcel Chemistry Quickfire: Rates & Bonding


Edexcel Chemistry Quickfire: Rates & BondingVersión en línea Rates, bonding & acids quiz por Pia 1 Which factor increases the rate of reaction by more successful collisions per second? a Larger particle size b Lower concentration c Higher concentration d Increased pressure of a gas reduces collisions 2 In a rate equation, what does a faster rate imply about reactant concentrations over time? a Product concentrations rise slower b Temperature must drop to maintain rate c Concentrations of reactants decrease more quickly d Concentrations increase over time 3 Balance this equation: Fe + O2 → Fe2O3. What is the correct coefficients set? a 4 Fe + 3 O2 → 2 Fe2O3 b 2 Fe + 1.5 O2 → Fe2O3 c 4 Fe + 2 O2 → 2 FeO d Fe + O2 → FeO 4 Which test shows water presence using copper sulfate? a Anhydrous CuSO4 is white; blue hydrate forms with water b CuSO4 remains blue in water c Copper metal dissolves in water and turns blue d CuSO4 turns red with water 5 Which type of bonding is characterized by electrons shared between atoms? a Hydrogen bonding b Ionic bonding c Covalent bonding d Metallic bonding 6 Alkalis form what ion in solution that makes solutions basic? a H3O+ b OH− (hydroxide) c SO4^2− d NO3− 7 True or False: Alloys are typically stronger than pure metals due to lattice disruption. a True b False c Alloys are never stronger d Only brittle alloys are stronger 8 Which of these reactions best shows a metal oxide reacting with an acid? a CuO + H2 → Cu + H2O b Na2O + H2SO4 → Na2SO4 + H2O c CaO + 2 HCl → CaCl2 + H2O d Fe2O3 + 3 H2 → 2 Fe + 3 H2O 9 Which statement best describes ionic bonding? a Electrons are delocalized in a lattice only b Electrons are transferred between metals and non-metals c No electrons are involved in bonding d Electrons are equally shared 10 Which factor is least related to rate of reaction in aqueous solutions? a Catalyst presence b Color of the reactants c Concentration d Temperature Feedback 1 Higher concentration raises collision frequency, speeding up reactions. 2 Faster rate means reactants are consumed quicker, decreasing their concentrations faster. 3 Balance iron and oxygen: 4 Fe and 3 O2 give 2 Fe2O3. 4 Anhydrous CuSO4 is white; it turns blue when hydrated. 5 Covalent bonds involve electron sharing between non-metals. 6 Bases produce OH− in solution, giving basicity. 7 Disrupting the lattice hinders dislocation movement, increasing strength. 8 Metal oxides react with acids to form a salt and water. 9 Ionic bonding involves transfer of electrons from metal to non-metal. 10 Concentration, temperature, and catalysts affect rate; color is not a rate factor.

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Edexcel Chemistry Quickfire: Rates & Bonding

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Edexcel Chemistry Quickfire: Rates & BondingVersión en línea

por Pia

Which factor increases the rate of reaction by more successful collisions per second?

In a rate equation, what does a faster rate imply about reactant concentrations over time?

Balance this equation: Fe + O2 → Fe2O3. What is the correct coefficients set?

Which test shows water presence using copper sulfate?

Which type of bonding is characterized by electrons shared between atoms?

Alkalis form what ion in solution that makes solutions basic?

True or False: Alloys are typically stronger than pure metals due to lattice disruption.

Which of these reactions best shows a metal oxide reacting with an acid?

Which statement best describes ionic bonding?

Which factor is least related to rate of reaction in aqueous solutions?

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