1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lukranit [14]
3 years ago
11

Water molecules are polar because the?

Chemistry
2 answers:
disa [49]3 years ago
6 0

Answer:

Water (H2O) is polar due to the  bent shape of the molecule. The shape means most of the negative charge from the oxygen is one one side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule. This is an example of polar covalent chemical bonding.

Hope this helps!

user100 [1]3 years ago
4 0

Answer:

Its shape is bent, and so since the oxygen is electronegative, it pulls the electrons towards itself.

Explanation:

You might be interested in
What is the effect of tap water, sea water, and rainwater on the rusting rate of iron?
UkoKoshka [18]

Answer:

The more acidic the solution the faster it rusts. More Na = more rust

Explanation:

4 0
3 years ago
Which is a renewable energy source?
Likurg_2 [28]

Answer:

The answer is D. Hydroelectric

4 0
3 years ago
Read 2 more answers
Carbon dioxide in the oceans is affecting its pH.<br><br> a. True<br> b. False
monitta
Its true it affects the pH balance
7 0
2 years ago
Which of these is the most accurate description of the job of an art conservationist?
stiv31 [10]

Answer:

Cultural conservation is concerned with how cultural material is preserved as it moves from the past, through the present and into the future. This material may be books in libraries, documents in archives, objects or artwork in museums, or items owned by a community, a family or an individual.

It is the conservator’s job to help ensure the material’s protection and safe passage into the future for as long as is possible.

Art conservation is a complex and highly interdisciplinary task, requiring a knowledge base that may include methods of manufacture, the mechanisms of damage and the cultural significance of an object. Art conservators use history to understand why and when an artwork was made and science to understand how it was made and what has happened to it over time.

When the history of a painting is unclear, conservators will turn to art history to contextualise the work and to science to investigate the evidence of the date and method of manufacture.

Thorough examination and documentation is always the first step in conservation. This involves assessing the original structure and materials of the object, the extent of deterioration, damage and loss, and to ascertain previous restorations or other interventions.

Restoration and preventative conservation

Walters Art Museum

The terms “conservation” and “restoration” are often used interchangeably, but they represent very different activities.

Restoration seeks to modify the appearance of an object to reduce the visual impact of deterioration or damage and to restore visual continuity. Although conservation may involve restoration, more usually it’s engaged with preventing damage and deterioration.

Preventive conservation brings knowledge of the mechanisms of deterioration to provide the best options for the long-term care of cultural material. Take the example of a newspaper page turning yellow and brittle in the hot summer sun – knowing how the cellulose in the paper ages, that this process involves the creation of acid and that this acid contributes to the discolouration and deterioration of paper, means that appropriate steps can be taken to mitigate this process.

Preventative conservation is a predictive and holistic activity, often involving whole collections.

The operational aspects of air conditioning in museums are often the concern of conservators. Chemical and physical reactions involved in deterioration increase with higher temperatures and with cyclic changes in humidity. As a result, materials may crack or become brittle.

On one hand it makes sense to have continuous and stable air-conditioning; on the other hand, air-conditioning is energy-intensive and expensive to run. Understanding the issues, weighing the risks and advising on the best options for the collection is the job of the conservator.

Craftsmanship and ethics

Conservation also requires exceptional craftsmanship and art-making skills such as those employed in the original creation of the artwork; being able to replicate the paint layers, carve a section of an object to replace a lost part, or cast a sheet of handmade paper to use as a fill for a large hole are some examples of these kinds of skills.

There are also conservation-specific skills. The torn edges of a painting’s canvas support may need to be rewoven thread by thread. A hole may require a patch which will then require a complex fill of the ground layer (the layer of gesso applied to the canvas to provide a smooth painting surface), paint and varnish that replicates the surrounding painting.

Elizabeth Buie

In some cases the painting’s conservator will simple “tone” areas, adjusting the degree of lightness or darkness, so that the viewer can still read the extent of damage in the image. In other cases the conservator will make the image as complete as possible by “inpainting”, reconstructing lost or deteriorated parts, so that the loss is virtually invisible.

Art conservation became a profession in Australia in 1973 and concerned at how best to support and develop programs for cultural materials conservation, the Australian Institute for the Conservation of Cultural Material (AICCM).

Under the AICCM’s Code of Ethics and Code of Practice, any intervention by a conservator on an object has to be reversible – in practice, that means using materials and techniques that can be removed easily in the future.

That’s one reason why an oil painting is never inpainted with oil paint. Oil paint cross-links with age until it forms a hard, plastic surface. In a few short decades a restoration done in oil paint will only be able to be removed with solvents that are strong enough to also remove the original paint.

This concept of reversibility is aligned to the concept of minimal intervention; and both require good documentation, usually a condition and treatment report accompanied by good images.

Explanation:

4 0
3 years ago
The diagram below represents the organizational levels of living things.
Tasya [4]

Answer: its vein

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • If there were only three electron groups around an atom, how would they be arranged?
    15·1 answer
  • Magnesium oxide can be produced by heating magnesium metal in the presence of oxygen. When 10.1 g of Mg reacts with 10.5 g of O2
    15·1 answer
  • Which of the following rights is granted by the Fifth Amendment?
    9·1 answer
  • Compounds formed when non-metals react with metals consist of particles called ionic compound
    12·1 answer
  • True or false the easiest way to identify a Kia for us to look at it’s cones
    10·2 answers
  • Please help me with some extra details please
    13·1 answer
  • Is water an acid, base, or neutral?
    14·2 answers
  • What is true when a reaction has reached equilibrium?
    13·1 answer
  • Sunflower oil has a density of 0.920 g/mL. What is the mass of 4.50 L of sunflower oil? What volume (in L) would 375g of sunflow
    12·1 answer
  • (9) A penny contains 22,452,000,000,000,000,000,000 zinc atoms and also contains
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!