Question 1

What is a bomb calorimeter used for?

Accepted Answer

measuring heat when a substance is burned at a constant volume

Answer

measuring pressure in gases

Answer

measuring volume of liquids

Answer

measuring temperature of solids

Question 2

In the context of nutrition, what does the term 'Calorie' refer to?

Accepted Answer

a unit used in nutrition and is capitalized

Answer

the energy needed to melt 1 mole of ice

Answer

the amount of heat needed to raise 1g of water 1°C

Answer

the energy released when a gas condenses

Question 3

What does calorimetry measure?

Accepted Answer

heat change for chemical and physical processes

Answer

concentration of solutions

Answer

pressure changes in gases

Answer

volume changes during reactions

Question 4

What is the process of deposition?

Accepted Answer

phase change of a gas to a solid without going through the liquid phase

Answer

phase change of a solid to a gas

Answer

phase change from liquid to gas

Answer

phase change from solid to liquid

Question 5

What happens in an endothermic process?

Accepted Answer

the system absorbs heat from the surroundings

Answer

no heat exchange occurs

Answer

the system releases heat to the surroundings

Answer

the temperature of the system decreases

Question 6

What is enthalpy (H)?

Accepted Answer

the amount of heat in a system at a given temperature

Answer

the energy released during combustion

Answer

the change in temperature during a reaction

Answer

the energy required to vaporize a substance

Question 7

What does an exothermic process do?

Accepted Answer

system releases heat to the surroundings

Answer

system absorbs heat from the surroundings

Answer

system requires energy input

Answer

system changes temperature dramatically

Question 8

What is the definition of heat (q)?

Accepted Answer

a transfer of energy between objects due to a temperature difference

Answer

the total amount of energy in a system

Answer

the energy required to change phases

Answer

the energy associated with chemical bonds

Question 9

What does the law of conservation of energy state?

Accepted Answer

energy is neither created nor destroyed, only changes forms

Answer

energy can be created and destroyed

Answer

energy is always lost in chemical reactions

Answer

energy is independent of temperature

Question 10

What is the specific heat capacity (c)?

Accepted Answer

the amount of heat it takes to raise the temperature of 1 g of a substance 1°C

Answer

the total energy in a closed system

Answer

the heat required for a substance to change phase

Answer

the energy needed to vaporize a gas

Question 11

What is a bomb calorimeter used for?

Accepted Answer

to measure heat when a substance is burned at a constant volume

Answer

to measure temperature changes

Answer

to measure pH levels

Answer

to measure pressure of gases

Question 12

What does the term calorie (with a capital C) refer to?

Accepted Answer

a unit used in nutrition

Answer

a measure of temperature

Answer

a phase change

Answer

a type of chemical reaction

Question 13

What is the primary function of a calorimeter?

Accepted Answer

to measure heat changes in a chemical or physical process

Answer

to measure the volume of liquids

Answer

to regulate temperature in a reaction

Answer

to analyze chemical composition

Question 14

What does an endothermic process do?

Accepted Answer

absorbs heat from the surroundings

Answer

has no heat exchange

Answer

involves a phase change

Answer

releases heat to the surroundings

Question 15

What does enthalpy (H) represent?

Accepted Answer

the amount of heat in a system at a given temperature

Answer

the average kinetic energy of particles

Answer

the pressure exerted by gases

Answer

the total mass of a substance

Question 16

What is the energy needed for 1 gram of a solid to melt at constant temperature called?

Accepted Answer

Heat of Fusion

Answer

Heat of Solidification

Answer

Heat of Condensation

Answer

Heat of Vaporization

Question 17

What phase change occurs during sublimation?

Accepted Answer

solid to gas without going through the liquid phase

Answer

liquid to solid

Answer

solid to liquid

Answer

gas to liquid

Question 18

What is the Law of Conservation of Energy (First Law of Thermodynamics)?

Accepted Answer

Energy is neither created nor destroyed, only transformed

Answer

Energy is fixed and cannot change forms

Answer

Energy can be destroyed in a closed system

Answer

Energy can be created from nothing

Question 19

What is specific heat capacity (c)?

Accepted Answer

the amount of heat it takes to raise the temperature of 1 g of a substance by 1°C

Answer

the energy needed to vaporize a substance

Answer

the temperature range of a substance

Answer

the total energy in a reaction

Question 20

What does the term 'surroundings' refer to in thermochemistry?

Accepted Answer

everything else in the universe except the system

Answer

only the reactants in a reaction

Answer

only the products of a reaction

Answer

the system itself

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