ThermoChem Quick Quiz

Froggy Jumps

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Speedy thermodynamics challenge.

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BERNARD KYLE LLAMAS

Philippines

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ThermoChem Quick Quiz


Froggy Jumps ThermoChem Quick QuizVersion en ligne Speedy thermodynamics challenge. par BERNARD KYLE LLAMAS 1 Which process is endothermic? a Photosynthesis b Combustion c Freezing of water 2 In an exothermic reaction, product energy is ______ the reactants'. a greater b less c equal 3 Which system cannot exchange energy or matter? a Isolated b Closed c Open 4 SI unit of energy is? a joule b watt c calorie 5 True about work: +w means the system does work on surroundings or vice versa? a system on surroundings b work always positive c surroundings on system 6 Expansion Work relation: w = ? a −PΔV b q = mCΔT c ΔE = q + w 7 Heat content at constant pressure is? a activation energy b Enthalpy c internal energy 8 Catalyst effect on rate: it a lowers activation energy b adds heat c increases activation energy 9 Which does not affect reaction rate? a Concentration b Volume c Surface area 10 As temperature rises, reaction rate generally a increases b decreases c no change 11 Formula for heat absorbed or released? a q = mcΔT b w = PΔV c ΔE = q + w 12 Total enthalpy change equals sum of steps’ enthalpies: a Boyle's Law b Hess's Law c Law of Conservation 13 An open system example is? a Thermos bottle b Sealed balloon c Boiling water in an open pot 14 Heat released by system in calorimetry goes where? a remains in system b to surroundings c lost completely 15 Powdered zinc reacts faster due to? a temperature b surface area c concentration 16 If doubling concentration doubles rate, order is? a zero b second c first 17 Rate law expresses relation between? a rate and concentration b rate and pressure c rate and time 18 If doubling both reactants quadruples rate, overall order is? a 2 b 1 c 3 19 A reaction that absorbs heat feels? a hot b neutral c cold 20 Catalysts: true statement? a increase activation energy b are consumed c provide an alternative pathway 21 When temperature rises, molecules move a stop moving b faster c slower 22 Rate of a reaction is change in ______ per time. a color b temperature c concentration 23 An inhibitor effect on rate: it a increases activation energy b lowers activation energy c heats reactants 24 Fastest likely reaction type? a solid-solid b solid-gas c gas-gas reaction 25 If ΔH is negative, the reaction is? a exothermic b spontaneous c endothermic

ThermoChem Quick Quiz

Froggy Jumps

À propos de cette activité

Créé par

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ThermoChem Quick QuizVersion en ligne

par BERNARD KYLE LLAMAS

Which process is endothermic?

In an exothermic reaction, product energy is ______ the reactants'.

Which system cannot exchange energy or matter?

SI unit of energy is?

True about work: +w means the system does work on surroundings or vice versa?

Expansion Work relation: w = ?

Heat content at constant pressure is?

Catalyst effect on rate: it

Which does not affect reaction rate?

As temperature rises, reaction rate generally

Formula for heat absorbed or released?

Total enthalpy change equals sum of steps’ enthalpies:

An open system example is?

Heat released by system in calorimetry goes where?

Powdered zinc reacts faster due to?

If doubling concentration doubles rate, order is?

Rate law expresses relation between?

If doubling both reactants quadruples rate, overall order is?

A reaction that absorbs heat feels?

Catalysts: true statement?

When temperature rises, molecules move

Rate of a reaction is change in ______ per time.

An inhibitor effect on rate: it

Fastest likely reaction type?

If ΔH is negative, the reaction is?