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Chemistry

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Chanelle Morar

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2y ago
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Cards in this guide (17)
What is substances specific heat

The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1kg of that substance by 1 degrees Celsius (or Kelvin). 1kg of water requires 4200 J of energy to raise its temperature by 1 degrees Celsius

What do thermal insulators have

Thermal insulators have insulating capabilities. This means that they do not have any aspect that allows them to conduct thermal energy.

Solid metals undergo greater thermal expansion than liquids do

false

Swamp coolers are effective because

the water's latent heat of vaporization is being pulled from the air, the water pulls heat from the room to undergo a phase change.

Liquids usually have higher volume coefficients of expansion than solids do

true

The of an acid and a base is determined by how completely they dissociate in water

The _____________ of an acid and a base is determined by how completely they dissociate in water.

strength

A beach towel is laying on the sand in the sun Why does the sand feel hotter to touch than the towel

The sand has a higher conductivity.

On a cold winter day the flow of heat is from the outside in

Falseee

What amount of acid or base dissolved in water called

the concentration

Which one of the following is a common acid soap aspirin antacid and washing soda

Aspirin

What variable represents specific heat in the equation Q mcT

variable c

Is Sixty-five degrees Fahrenheit about 18 degrees Celsius

Yes, 18°C is 64.4°F, and 65°F is 18.33°C

Which one of the following is an example of a strong acid

Hydrochloric acid -APEX;)

On a very hot summer day railroad tracks can buckle causing train delay and derailments select the what the best reason below for the buckling

😂

Changing subscripts is one of the steps of balancing a chemical equation.

false

On a very hot summer day, railroad tracks can buckle, causing train delays and derailments. Select the best reason below for the buckling

The metal undergoes thermal expansion.

A steep slope on a phase change graph indicates

Heirhey

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