What is the difference between chemical and physical properties and reactions

1 answer:

8 0

Physical properties are things that can be observed without changed what the item is, for example, you can cut down a tree and look at it, but it's still a tree.

Chemical properties are things you can observe by changing what the item is, staying on the subject of trees, you can burn a tree and it becomes something completely different - ash.

You might be interested in

Please help me with 8,9,10,11

Gwar [14]

Answer:

8. The particles have the same volume in each container (not so sure about number 8 ) 9. Solid 10. Gas 11. Temperature and Pressure

8 0

3 years ago

A student collected the following data for a fixed volume of gas:

inessss [21]

First, you should convert the temperature unit to absolute temperature.

Second, you shoul graph the points. Then you will find a pretty linear correlations among the points.

You can pick between using the best fit line or you could observe that as you get to higher temperatures the linear behavior is "more perfect".

I found this best fit line:

P = 2.608T + 14
Then, for T = 423K

P = 2.608(423) + 14 = 1117 mmHg

If you prefer to use the last two points, this is the calculus:

[P - P1] / [T - T1] = [P2 - P1] / [T2 - T1]

[P - 960]/[423 -373] = [960 - 880] / [373- 343]

=> P = 1093.3 mmHg.

You can pick any of the results 1177 mmHg or 1093 mmHg, You need more insight to choose one of them: conditions and error of the experiment for example.

3 0

3 years ago

If water and hydrogen peroxide both consist of hydrogen and oxygen atoms, explain why they have different chemical and physical

lana [24]

Water and hydrogen peroxide are different compounds although they have the same kind of atoms. The molecular formula of water is H2O (two atoms of oxygen chemically bonded to one atom of oxygen). The molecular formula of hydrogen peroxide is H2O2, (each atom of oxygen is chemical bonded to one atom of H and other atom of O). So,<span> the presence of different chemical bonds leads to different products with different chemical properties.</span><span />

5 0

3 years ago

A) Compare the masses of the three cylinders. (1 point)

Reika [66]

Answer:

the answer would be ;B compare the volumes of the three cylinders

3 0

3 years ago

What are the rows of the periodic table called?

Arlecino [84]

Answer:

i believe its called A. periods

4 0

2 years ago