Science heat test two Science heat test two

Solute

The substance that dissolves

Solvent

The substance that dose the dissolving (usually water)

If temperature rises

We see the heat of solution is negative

If temperature drops

We say the heat solution is positive

If he is released (gets warmer)

We say the process is exothermic (-)

If the heat is (gets colder)

We say it is endothermic (+)

The amount of energy it takes to change the state of a substance is called

latent heat

Coldest temperature possible

Zero Calvin

He transferred through fluids

Convection

Heat transfer that can happen through a vacuum

Radiation

Windchill is an example of

Convection

A flat line on a time temperature graph could mean

Melting, freezing no change

Arising line on a time temperature graph could mean

Getting warmer

The specific heat capacity of a substance is the energy required to

Cool 1 g

The latent heat of vaporization is the energy required to

Condense 1 g

How much water is equal to 1000 g

1000ml, 1 L, 1 kg

Temperature of ice water

0

How are heat and temperature different?

Heat is the transfer of thermal energy due to temperature difference

Temperature measures the average of kinetic energy and particles

Explain why you can’t have a temperature of -1,000,000c

it would imply negative kinetic energy, which is impossible

Identify describe and give example examples of three means the heat can transfer

Conduction (direct contact)

convection (fluid movement)

Radiation (electromagnetic waves)

Describe how a thermos works

a thermos minimize heat transfer by trapping it inside with a vacuum and reflective surfaces, and using conduction, convection, and radiation