Describe a physical change

1 answer:

8 0

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

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HELP Which of the following fractions can be used in the conversion of 32 m3 to the unit mm3?

poizon [28]

We know that each millimeter contains 10⁻³ meters. Writing this as a ratio:
1 mm : 10⁻³ m

We require a conversion from m³ to mm³, so we must take the cube of the ratio we have made:
1 mm³ = (10⁻³)³ m³

Therefore, the conversion used will be:
(1 mm / 10⁻³ m)³

When we multiply by this conversion, we will get:
32 m³ = 32 x 10⁹ mm³

7 0

3 years ago

How close a measured value is to the value is to the accepted value

sveta [45]

You could use percent error. Absolute | | of accepted value minus experimental value \ divided by accepted value multiply by 100 and that is your answer

8 0

3 years ago

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Allushta [10]

C) coal !
Have a nice day!\
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4 0

3 years ago

Directions: Record the number of each atom in each molecule, then record the total number of atoms in the molecule.

Elan Coil [88]

Total number of atoms = 5

<h3>Further explanation </h3>

The formula of a compound shows the composition of the constituent elements