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Y_Kistochka [10]
2 years ago
10

3.) All matter has both physical and chemical properties. A physical property is one that does not change the chemical nature of

matter. Which of these choices is a physical property?
A.) height
B.) flammability
C.) ability to rust
D.) reaction with water
Chemistry
1 answer:
dexar [7]2 years ago
8 0

Answer:

D

Explanation:

It would be D because you are observing the reaction and don’t change anything

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Describe the molecular structure of water and explain why the water molecule is polar
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Explanation:

Hybridization of O in H_2O = sp^3

So, water molecule has four hybrid orbitals.

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Remaining two hybrid orbitals are occupied by two lone pairs.

Because of lone pair-lone pair repulsion, shape of H_2O becomes bent.

Water molecule is polar because of difference in eletronegativities of O and H.

O is more electronegative as comapared to hydrogen. So bonding electrons get attracted towards O atom which results in the development of partial negative charge on O atom and partial positive charge on H atoms.

Because of development of partial negative and partial positive charge, water molecule becomes polar.

8 0
3 years ago
The following balanced equation shows the decomposition of ammonia (NH3) into nitrogen (N2) and hydrogen (H2). 2NH3 → N2 + 3H2 A
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The decomposition of ammonia is characterized by the following decomposition equation:
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6 0
3 years ago
Read 2 more answers
The atom in a sample of an element must contain nuclei with the same number of?
slava [35]
Hey there! 

Answer: Protons 

The atom in a sample of an element must contain nuclei with the same number of protons. If the protons change in number, then the element will modify as well. 

Thank you!
7 0
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Vlad1618 [11]

Answer:

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2nd question: The moon has a week/month cycle instead of a day/night cycle.

3rd question: The corona

Explanation:

5 0
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Oxana [17]

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2 years ago
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