Chemistry Middle School

Using a lattice structure of sodium chloride, explain why sodium chloride:


a) forms crystals that are cubic in shape [2]

b) has a high melting point [2]

c) acts as an insulator when solid, but will conduct electricity when molten. [2]

Answers

Answer 1

Answer:

hope it helps plz mark me brainliest!

Explanation:

a) This pattern is repeated in all directions, giving a giant three-dimensional lattice structure in sodium chloride crystals. Because of the strong electrostatic forces between them, it takes a great deal of energy to separate the positive and negative ions in a crystal lattice.

b) Sodium chloride has a high melting and boiling point. There are strong electrostatic attractions between the positive and negative ions, and it takes a lot of heat energy to overcome them. Ionic substances all have high melting and boiling points.

c) In the solid state, ionic compounds such as sodium chloride have their ions fixed in position and therefore these ions cannot move so solid ionic compounds cannot conduct electricity. However in the molten state, ions in ionic compounds are free to flow and therefore molten sodium chloride can conduct electricity.

Answer 2

Answer:

i am not sure

Explanation:

you are going to go far

Related Questions

what is the magnification equation and how do you use it?

anyone ill give best answer branliest i swear

Answers

you need to work harder next time
hello!
the magnification equation is the eyepiece lens x objective lens.
you would use this equation for calculating the length of a cell and the magnification is used to find the length of an image

Methane is a gas at room temperature and pressure. Explain why this is the case.

Answers

Answer:

hope it helps ❤

Explanation:

Methane only has london dispersion forces since it is nonpolar. London dispersion force is the weakest intermolecular force, so the forces between its molecules will be weak. This leads to a low boiling point that is lower than room temperature, which makes it a gas at room temperature.

Methane has london dispersion forces since it is nonpolar. London dispersion force is the weakest intermolecular force, so the forces between its molecules will be weak. This leads to a low boiling point that is lower than room temperature, which makes it a gas at room temperature.

What internal physical structure protects the organs and supports the body of the animal? Fur Feathers Skeleton Skin

Answers

Answer:

Skeleton

Explanation:

Answer:

skeleton

Explanation:

what are the function of a objective lens and the ocular lenses

Answers

Answer:

Explanation:

The objective lens gather light from the specimen, magnifies the image of the specimen and projects the magnified image into the body tube. The ocular lens magnifies the image. It contains a measuring scale called a ocular micrometer.

the ocular lends magnifies so you can better see the specimen

What inert (noble) gas structure do hydrogen and carbon atoms have in sodium chloride?

Answers

The answer above is correct (I took a test on this)

Name and Title:

Include your name, instructor's name, date, and name of lab.


Objectives(s):

In your own words, what is the purpose of this lab?


Hypothesis:

In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.


Procedure:

The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.


Data:

Record the elements present in each unknown astronomical object. Be sure to indicate “yes” or “no” for each element.

Hydrogen Helium Lithium Sodium Carbon Nitrogen
Moon One












Moon Two












Planet One












Planet Two













Conclusion:

Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

Using two to three sentences, summarize what you investigated and observed in this lab.
Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essential to use many types of equipment when studying space?
If carbon was the most common element found in the moons and planets, what element is missing that would make them similar to Earth? Explain why. (Hint: Think about the carbon cycle.)
We know that the electromagnetic spectrum uses wavelengths and frequencies to determine a lot about outer space. How does it help us find out the make-up of stars?
Why might it be useful to determine the elements that a planet or moon is made up of?

Answers

this seems like a class project
i support that frfr
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