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Lesechka [4]
3 years ago
9

1. How is melting point of a solid determined?

Chemistry
1 answer:
Oxana [17]3 years ago
4 0

Answer:

Melting points are often used to characterize organic and inorganic crystalline compounds and to ascertain their purity.

Explanation:

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A molecule is broken down into its constituent atoms. Do these atoms have the same properties as the molecule?
belka [17]

When a molecule is broken down into its constituent atoms, these atoms do not have the same properties as the molecule.

We can use an everyday molecule, such as water, H20, to show this property. Water is a liquid with unique properties that stem from its hydrogen bonding. On the other hand, its constituent atoms, hydrogen and oxygen, are not liquids, and have very different properties. Oxygen and hydrogen are both gases; hydrogen is dangerous and very flammable, while we breathe in oxygen throughout our lives. This example illustrates how the atoms that make up a molecule usually have different properties than the completed molecule.

Hope this helps!

4 0
4 years ago
Which components of a galaxy move in circular patterns or revolve around a star?
Sholpan [36]

Answer:

C.

Explanation:

It's becase of the gavitational pull of a star or sun

5 0
2 years ago
Read 2 more answers
A certain polyatomic ion contains 49 protons and 50 electrons. What's the net charge of this ion?
timurjin [86]

Explanation:

B more negative charges than positive charges

6 0
3 years ago
Which compound can be used to preserve biological specimens? A central C is double bonded to an O, and single bonded to 2 H. A c
Darina [25.2K]

Answer:

A central C is double bonded to an O, and single bonded to 2 H

Explanation:

Methanal, also known as formaldehyde, is a chemical compound used to preserve dead biological specimens for further study. It is called formalin when in a solution and it helps keep specimens in a fresh state by hardening the tissues of the specimen involved.

Formaldehyde is a gaseous compound that has an aldehyde functional group i.e. -CHO and has a chemical formula, H-CHO or CH2O as described in the question that a central C is double bonded to an O, and single bonded to 2 H (see attached image for structural formula).

4 0
4 years ago
The less mass in a given volume of air the
DiKsa [7]

Answer:

The less mass in a given volume of air the  less dense the air is going to be.

7 0
3 years ago
Read 2 more answers
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