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Chemistry

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Norma Lockman

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2y ago
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Cards in this guide (15)
What is the specific heat of a substance

The amount of heat a substance can hold.

What is an endothermic reaction

An endothermic reaction is one that absorbs heat from the surroundings.

Which metal has the highest specific heat capacity

Lithium is the metal that has the highest specific heat capacity.

Why does temperature stay constant during a phase change

To put it in simple terms, all of the energy that would normally increase the temperature of the object, is being used to convert the object from one phase to another.

Once the object has completely changed to the new phase, the energy is not needed for phase change and raises the temperature of the object.

Because energy is being used to overcome intermolecular forces(apex)

What is the energy required to go from liquid to gas called

The latent heat of vaporization

What does the field of thermodynamics relate to

Changes in energy in systems

What conditions make G always negative

G is always negative when H is negative and S is positive.

What does the term spontaneous mean in chemical reactions

Occurring without added energy

How is stoichiometry used to calculate energy released when a mass of liquid freezes

Grams liquid × mol/g × Hfusion

What is the name of the field of study with laws that describe how energy is transferred to different locations and forms

Thermodynamics

Which term refers to the efficiency of a rocket's engine

specific impulse

What statements about airplane and rocket flight is true

Only one requires air molecules to generate lift.

A solid fuel designed for a rocket has air pocket inside what is the danger of this

The rocket might explode from the added pressure when the combustion reaction hits the air.

What is heat included in the equation of an endothermic reaction

The heat in an endothermic reaction is included as a reactant on the left side of the equation, and has a positive value.

An aerospace engineer is designing a rocket to have three stages. Which is not a reasonable explanation for this decision

to simplify the design of the rocket.

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