Which of the following are types of heat transfer? conduction, convection, radiation transmission, emission, absorption diffusion, osmosis, filtration absorption, reflection, refraction

conduction, convection, radiation

Unit 5 Thermochemistry

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Physics - Thermodynamics

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Cards in this deck(41)

What type of reaction absorbs energy from the surroundings, making the container feel cold, and is indicated by a positive sign?

What type of reaction releases energy to the surroundings, making the container feel hot, and is indicated by a negative sign?

Which law states that energy can neither be created nor destroyed but can be converted from one form to another?

What is the term for the total of the system and surroundings in thermodynamics?

What is the term for energy that flows from a warmer object to a cooler object, causing the warmer object to lose heat and the cooler object to gain heat?

Which of the following are types of heat transfer?

What is the amount of heat required to raise the temperature of one gram of pure water by one degree Celsius called?

What is the SI unit for heat and energy, where 1 calorie equals 4.184 of this unit?

What is the amount of energy required to raise the temperature of one gram of any substance by one degree Celsius called?

What is the formula for calculating specific heat, where q is the heat absorbed or released, m is the mass, cp is the specific heat capacity, and ΔT is the change in temperature?

Which of the following are exothermic phase changes?

Which of the following are endothermic phase changes?

What is the process called that measures the amount of heat absorbed or released during a chemical reaction, often using a calorimeter?

What do heating curves illustrate, particularly in relation to specific heat and enthalpy changes during phase transitions?

What is the equation for calculating energy changes without a phase change, where q is the heat absorbed or released, m is the mass, cp is the specific heat capacity, and ΔT is the change in temperature?

What is the formula for calculating energy change with a phase change, where m is the mass and Hvap or Hfus is the heat of vaporization or fusion?

What is the term for the heat required to vaporize one gram of liquid, involving either condensation (gas to liquid) or vaporization (liquid to gas)?

What is the term for the heat required to melt one gram of solid, involving either melting (solid to liquid) or freezing (liquid to solid)?

What is the term for the amount of energy absorbed or lost by a system during a process at constant pressure, used to quantify heat flow?

What does a positive or negative change in enthalpy (ΔH) indicate about a reaction?

Which of the following are types of enthalpies?

What is a balanced chemical equation that includes the physical state of all reactants and products and the energy change called?

In a chemical equation, what does it mean if heat is listed as a product or a reactant?

What is the term for the energy needed to form one mole of a compound from its elements?

What is the term for the difference between the enthalpy of substances that exist at the end of the reaction and substances present at the start?

What is the equation for calculating the heat of reaction, where ΔHrxn is the change in enthalpy, and Σn represents the sum of the enthalpies of formation of products and reactants?

What is the term for the amount of energy released as heat by the complete combustion of one mole of a substance?

What is the equation for calculating the heat of combustion, where ΔHc is the change in enthalpy, and Σn represents the sum of the enthalpies of formation of products and reactants?

What law states that enthalpy is not dependent on the reaction pathway and involves the combination of chemical equations to give the desired overall equation?

What are important considerations when applying Hess's Law to calculate enthalpy changes?

Which of the following is a valid unit for specific heat?

If the heat involved in a chemical reaction has a positive sign, what does this indicate about the reaction?

During phase changes, what happens to the temperature of a substance?

If heat is released by a chemical system, what happens to an equal amount of heat?

What would likely happen if you were to touch a flask after an exothermic reaction?

What is the heat capacity of a 500 ml beaker compared to a 75 ml beaker?

Which of the following is an endothermic process?

For any given substance, the magnitude of the molar heat of vaporization is always equal to what?

At what condition is the total energy of water molecules greatest?

What does delta H (ΔH) stand for in a chemical equation?

What is the quantity of heat required to change the temperature of 1g of a substance by 1 degree C defined as?

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Unit 5 Thermochemistry

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