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Chemistry

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Violette Cummerata

Lvl 10
4y ago
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Cards in this guide (14)
When baking soda is mixed with vinegar which type of reaction has taken place

its a chemical reaction

Solid metals undergo greater thermal expansion than liquids do

false

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

-30 degree C --APEX:)

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

At a temperature of -40 (minus forty) degrees, the Celsius and Fahrenheit scales read the same number.

A horizontal line on a phase change graph indicates

A horizontal line on a phase change graph means there has been no change. Often longer periods of research are needed to see significant change.

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

Aspirin

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 does not describe an acid

Slippery and tastes bitter.....not properties of an acid --Apex:)

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.

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