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Chemistry

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Ryleigh Runolfsson

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Cards in this guide (11)
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

Which is the temperature that Fahrenheit and Celsius thermometers would read as the same number

-40o C

Thermal insulators have

lots of air pockets, strong molecular bonds, high specific heat

At which temperature would it take the longest for the smell of cologne that someone is wearing to reach you

-30 degree C --APEX:)

Liquids usually have higher volume coefficients of expansion than solids do

true

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.

What would happen to the pressure inside any enclosures on the moon as the sun hits the exterior and the temperature begins to rise

The gasses inside the enclosure would expand as their molecules were excited creating a greater pressure inside the enclosures.

Is Sixty-five degrees Fahrenheit about 18 degrees Celsius

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

Which of the following is an example of redox reaction-

Redox reaction is chemical reactions. This happens when atoms oxidation state changes.

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

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