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3 years ago

Differentiate between Physical and chemical changes

2 answers:

7 0

Physical changes are things like rearranging your room, it may look different but the chemical makeup is the exact same as before. Chemical changes are what happens when wood is burnt to charcoal, or when you dissolve salt in water. Hope this helped!

Marina CMI [18]3 years ago

5 0

Answer:

<em>In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.</em>

<h3> I HOPE THIS WILL HELP YOU IF NOT THEN SORRY HAVE A GREAT DAY:)</h3>

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A sample of aluminum, which has a specific heat capacity of , is put into a calorimeter (see sketch at right) that contains of w

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Complete Question

A sample of aluminum, which has a specific heat capacity of 0.897 JB loc ! is put into a calorimeter (see sketch at right) that contains 200.0 g of water. The aluminum sample starts off at 85.6 °C and the temperature of the water starts off at 16.0 °C. When the temperature of the water stops changing it's 20.1 °C. The pressure remains constant at 1 atm. Calculate the mass of the aluminum sample.

Answer:

$M=58g$

Explanation:

From the question we are told that:

Heat Capacity $H=0.897$

Mass of water $M=200g$

Initial Temperature of Aluminium $T_a=85.6$

Initial Temperature of Water $T_{w1}=16.0$

Final Temperature of Water $T_{w2}=16.0$

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Heat loss=Heat Gain

Therefore

$M*0.897*(85.6-20.1) =200*4.184*(20.1-16)$

$M=58g$

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3 years ago

Differentiate between Physical and chemical changes​

Differentiate between Physical and chemical changes