answersLogoWhite

0

🎒

Chemistry

This category encompasses all questions about the composition, structure, properties, and reactions of matter.

500 Questions

What solution does atticus offer to the problem of dills presence?

User Avatar

Asked by Wiki User

Atticus suggests that Dill should be allowed to stay with them for the summer to keep him safe and out of trouble. He believes that having Dill around will give him a structured environment and positive influences. Additionally, Atticus feels that being with Scout and Jem will offer Dill stability and a sense of family.

What is the temperature for crickets?

User Avatar

Asked by Wiki User

This is a bit confusing. I do not know exactly what you mean by "What is the tempature (temperature) for crickets?"

My guess is you meant, "How does temperature play into the lives of crickets?"

Crickets communicate through stridulation. This is the rubbing of wings together to "chirp". You can hear this normally outside in the summer. While it is not known why, crickets chirp faster with higher temperature, it steadily represents the temperature outside.

One can infer that crickets then do not chirp at temperatures greater than 100 degrees Fahrenheit or below 55 degrees Fahrenheit.

Therefore, using this knowledge, scientists have concluded that you can discover the current temperature by counting the number of chirps in 15 seconds and then adding 40.

Example: if there are 23 chirps in 15 seconds the temperature is approximately 63 degrees Fahrenheit.

I hope that this helps.

What is a endohedral fullerene?

User Avatar

Asked by Wiki User

An endohedral fullerene is a spherical carbon cage-like structure, also known as a buckyball, with a molecule or atom encapsulated inside its cage. These structures have unique properties due to the confinement of the guest molecule or atom within the fullerene cage. Endohedral fullerenes have potential applications in areas such as medicine, materials science, and nanotechnology.

Why liquid has no definite shape but has definite volume?

User Avatar

Asked by Wiki User

Yes, liquids have a definite volume but not a definite shape, compared to solids that have a definite shape and a definite volume or gasses that have neither a definite shape or volume.

How do you make invisible spray?

User Avatar

Asked by Wiki User

yes ,it is possible recently there have been advances in science that bends light around the person wearing the cloak was recently on a show called That's Impossible on the history channel its a cool show you could probably find a you tube clip on it.

Matter occupies space and has what?

User Avatar

Asked by Wiki User

Matter does.

What is the consequeces of sheilding effect?

User Avatar

Asked by Wiki User

The shielding effect in chemistry refers to inner electrons shielding outer electrons from the attraction of the nucleus in an atom. This results in a decrease in the effective nuclear charge felt by the outer electrons, leading to changes in atomic and chemical properties such as ionization energy and atomic size in elements across a period.

What is a non formula poem?

User Avatar

Asked by Wiki User

A non-formula poem is a poem that does not adhere to specific guidelines or structures, such as rhyme scheme or meter. It is often free verse and allows the poet more freedom to express their emotions and ideas without constraints. These poems focus more on the message and imagery rather than following a set form.

Why is it so that ice cubes wrapped in newspapers do not melt easily?

User Avatar

Asked by Wiki User

Wrapping ice cubes in newspapers helps slow down the melting process by insulating them from external heat sources. The paper acts as a barrier, reducing the transfer of heat from the surroundings to the ice cubes, thereby keeping them colder for longer.

What properties does lead have?

User Avatar

Asked by Wiki User

Lead is a heavy metal with a bluish-white color that tarnishes to a dull gray. It is soft, malleable, and has a relatively low melting point. Lead is toxic to humans and animals if ingested or inhaled.

Which nursery rhyme has to do with hot milk and vinegar?

User Avatar

Asked by Wiki User

The nursery rhyme you are referring to is "Curly Locks". It is about a girl named Curly Locks who goes to fetch hot milk and vinegar in the night.

How liquids conduct electricity?

User Avatar

Asked by Wiki User

Liquids conduct electricity through the movement of charged particles, typically ions or electrons, within the liquid. The ability of a liquid to conduct electricity depends on its composition and the presence of charged particles capable of carrying electrical charge.

Here's how it typically works:

Ionization: In many cases, liquids that conduct electricity contain ions, which are atoms or molecules that have gained or lost electrons, thus acquiring a net electrical charge. When dissolved in a liquid, these ions become mobile and can move freely within the liquid.

Movement of Charged Particles: When a voltage is applied across the liquid (by immersing electrodes in the liquid and connecting them to a power source), the charged particles in the liquid, such as positive ions (cations) and negative ions (anions), move towards the oppositely charged electrode.

Completion of Circuit: The movement of charged particles within the liquid completes an electrical circuit, allowing the flow of electric current between the electrodes.

Conductivity: The ability of a liquid to conduct electricity depends on factors such as the concentration of ions in the liquid, the mobility of the ions, and the presence of any other conducting species. Generally, liquids with a higher concentration of ions and higher ion mobility tend to be better conductors of electricity.

Electrolytes: Liquids that readily conduct electricity are often referred to as electrolytes. Electrolytes can be either strong electrolytes, which completely dissociate into ions when dissolved in water (such as saltwater), or weak electrolytes, which partially dissociate into ions.

It's important to note that not all liquids conduct electricity. Pure water, for example, is a poor conductor of electricity because it contains few ions. However, when certain substances are dissolved in water, such as salt (sodium chloride), the resulting solution becomes conductive due to the presence of ions derived from the dissociation of the salt molecules.

Why is there green flame when you burn magazines?

User Avatar

Asked by Wiki User

The green flame is likely due to the presence of copper in the ink used in the magazines. When copper is heated, it can produce a green flame.

When a newspaper is left in direct usnlight for a few days the paper begins to turn yellow The yellow color is evidence of a what?

User Avatar

Asked by Irenyweeny8

The yellow color on the newspaper is evidence of oxidation and chemical breakdown of the paper fibers due to exposure to sunlight. This process is known as photooxidation and it causes the paper to lose its brightness and become yellow over time.

What is embedding in OCT media?

User Avatar

Asked by Wiki User

Embedding in OCT media refers to the process of incorporating tissue samples into a solid compound, typically a paraffin wax or resin, to provide structural support for cutting thin sections for microscopy analysis. The embedding process helps to preserve the tissue architecture and ensure proper orientation during sectioning.

What are the nuclides for lead?

User Avatar

Asked by Wiki User

Some nuclides for lead include Pb-206, Pb-207, and Pb-208. These isotopes have different numbers of neutrons in their nuclei, resulting in variations in atomic mass. Lead-206 is the most common isotope of lead.

What does high levels of urobilirubin indicate?

User Avatar

Asked by Wiki User

High levels of urobilirubin in the urine may indicate liver disease or conditions that lead to excessive breakdown of red blood cells, such as hemolytic anemia. It can also be a sign of blocked bile ducts or other disorders affecting the liver's ability to process bilirubin. A healthcare provider should further investigate the underlying cause of elevated urobilirubin levels.

What is the definition of intracellular and extracellular electrolyte composition?

User Avatar

Asked by Wiki User

Intracellular electrolyte composition refers to the concentration of charged ions (such as sodium, potassium, and chloride) inside a cell. Extracellular electrolyte composition, on the other hand, refers to the concentration of these ions outside the cell. Maintaining the balance of these electrolytes is crucial for proper cell function and overall health.

Function of balance?

User Avatar

Asked by Wiki User

Balance is the ability to maintain an upright posture and stable body position. It is essential for activities like walking, running, and standing without falling. Good balance requires coordination between sensory input (from the eyes, inner ear, and proprioceptors) and muscular responses to maintain equilibrium.

How do you do in-text citations?

User Avatar

Asked by Wiki User

In-text citations include the author's last name and the publication year within parentheses at the end of a sentence where the information is cited. If the work has no author, use the title instead. Make sure to list the full reference details in the bibliography or reference list at the end of your document.

Contribution of Clara lim sylianco in chemistry?

User Avatar

Asked by Wiki User

Clara Lim-Sylianco was a Filipino chemist who made significant contributions to the field of biochemistry, particularly in the extraction and study of plant pigments. She focused on the chemistry of natural products and the isolation of compounds from local plants, contributing to the scientific understanding of traditional Philippine medicine. Her research helped highlight the potential of Filipino flora in drug discovery and the importance of preserving indigenous knowledge of medicinal plants.

What does it mean when something is empirically determined?

User Avatar

Asked by Wiki User

When something is empirically determined, it means that it is based on observation, experience, or experimental evidence rather than theory or speculation. It involves deriving conclusions from real-world data or evidence gathered through empirical methods such as experimentation or observation.

What is the color of pH strip when the water has a 9.5 pH level?

User Avatar

Asked by Wiki User

First of all it is NOT water at this pH level. It is an ALKALINE Solution.

With a pH = 9.5 the colourt would be blue.

What is the best reason for using iron filings instead of an iron nail in a chemical reaction?

User Avatar

Asked by Wiki User

The best reason for using iron filings instead of an iron nail in a chemical reaction process would be that the filings would take less time to dissolve, because they are already in the smallest solid form they can be in. They are also more likely to have been stored in such a way that they are not contaminated by rust or other pollutants.

What are the types of ketone bodies present in urine?

User Avatar

Asked by Wiki User

The primary types of ketone bodies present in urine are:

  1. Acetoacetate (AcAc): This is the most abundant ketone body produced during ketosis and is readily detectable in urine.

  2. Beta-hydroxybutyrate (BHB): Although not typically excreted in large amounts in urine, it can sometimes be detected, especially during significant ketosis or in certain medical conditions.

  3. Acetone: This is a volatile ketone body and is the smallest component of urinary ketones. It's responsible for the characteristic fruity odor of the breath in individuals experiencing ketosis. While it's not directly measured in urine, its presence may indirectly indicate the production of other ketone bodies.

These ketone bodies are produced when the body metabolizes fatty acids for energy in the absence of sufficient glucose, such as during fasting, prolonged exercise, or in conditions like diabetes. They can be detected in the urine using various tests, including urine test strips or laboratory analysis.

Medicas is providing Ketone Bodies urine test for screening ketones in the urine. Also, providing professional medical advice which is crucial for accurate diagnosis and appropriate treatment.