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What are two ways that covalent polyatomic particles can become ions?
If an element with a high electron affinity (like oxygen) is part of a polyatomis molecule. one or more of the missing valence e' can sometimes be filled by a nearby extra e' instead of sharing elctrons with other atoms:)
Why is it necessary for there to be a polar covalent bond in order for a hydrogen bond to occur?
A hydrogen bond occurs when a hydrogen atom from one molecule is attracted to an atom (usually oxygen) of another molecule. There is a small positive charge on a hydrogen atoms in many covalent bonds due to H's very low electronegativity. This results from a polar covalent bond. Likewise, there is usually a small negative charge on an oxygen atom in a covalent bond due to O's relatively large electronegativity. This is also the result of a polar covalent bond. The +/- attraction that results from these polar bonds is what a hydrogen bond actually is. In the absence of a polar covalent bond, there will be no residual charge left on either the hydrogen or the oxygen and therefore no hydrogen bonding will occur!
Are hydrogen bonds a type of intermolecular force?
Yes, hydrogen bonds are a type of intermolecular force. They are attractions between a hydrogen atom bonded to an electronegative atom (such as oxygen or nitrogen) and a nearby electronegative atom. Hydrogen bonds are weaker than covalent or ionic bonds but are important in determining the structure and properties of molecules.
What is a chemical bound?
A chemical bond is the force that holds atoms together in a compound. It is formed when atoms share or transfer electrons to achieve a stable configuration. Chemical bonds can be classified as ionic, covalent, or metallic based on the way atoms interact.
Is C H ionic or covalent bond?
No. A hydrogen bond occurs when H is bonded to a strongly electronegative element like oxygen in a compound. The oxygen attracts the electrons in the bond stronger than the hydrogen setting up partial positive and partial negative charges in the H and O respectively in a single molecule. A nearby molecule with the same charges will be attracted (opposites attract, even with these partial charges.) This attraction from one molecule to another is a hydrogen bond because it involves the hydrogen atom with a partial positive charge.
How do you construct a hypothesis to test the claim that mint cools things down?
Simple. For the hypothesis, you state what you are trying to prove as a fact: The presence of mint will cool nearby substances..You would then go about testing this by making pairs of substances and introducing mint or mint products (choose one) into one half of the pairs and use the other half as a control. You would then measure the temperature of all of the substances (mint and control) over time and compare the data. You would quickly discover that the hypothesis is false; the presence of mint has no effect on the temperature of nearby substances.
Why can epithelial cells survive without blood vessels?
They receive nourishment via diffusion of substances from nearby tissue.
What are chemicals that act on the neighboring cell called?
Chemicals that act on neighboring cells are called paracrine factors or paracrine substances. These substances are released by cells to communicate with nearby cells and elicit a specific response.
What type of bonding involves the sharing of electrons?
Covalent bonding.
What slight attraction that develops between the oppositely charged regions of nearby molecules?
When molecules are close together, a slight attraction can develop between the oppositely charged regions of nearby molecules. Chemists call such intermolecular forces of attraction van der Waals forces. (This also occurs in the phenomenon known as Hydrogen-bonding.) What is the alternate of a slight attraction - it is called the covalent bond. Note that an ionic bond is a type of covalent bond.
What are the slight attractions the develop between oppositely charged regions of nearby molecules?
When molecules are close together, a slight attraction can develop between the oppositely charged regions of nearby molecules. Chemists call such intermolecular forces of attraction van der Waals forces. (This also occurs in the phenomenon known as Hydrogen-bonding.) What is the alternate of a slight attraction - it is called the covalent bond. Note that an ionic bond is a type of covalent bond.
Why were most lynching victims hung from trees?
Because they were nearby. Lynchings took place quickly, so people would be murdered with whatever was available.
What is the function of the capilliary?
to permit the exchange of nutrients and waste between the blood and tissue cells substances such as oxygen, vitamins minerals and amnio acids passes through the tissue fluid to nourish the nearby cells and substances such as carbon dioxide and waste are passed out of the cells.
What type of attraction exists between the slight positive charge of a hydrogen atom and slight negative charge of a nearby atom?
When molecules are close together, a slight attraction can develop between the oppositely charged regions of nearby molecules. Chemists call such intermolecular forces of attraction van der Waals forces. (This also occurs in the phenomenon known as Hydrogen-bonding.) What is the alternate of a slight attraction - it is called the covalent bond. Note that an ionic bond is a type of covalent bond.
What are two ways that covalent polyatomic particles can become ions?
If an element with a high electron affinity (like oxygen) is part of a polyatomis molecule. one or more of the missing valence e' can sometimes be filled by a nearby extra e' instead of sharing elctrons with other atoms:)
What is the speed of a millipede?
It will quickly try to hide under the nearby brush or wood.
How is an internal plant area defined?
Plants are multicellular organs with either rigid or flexible cell walls. The cell walls contain cellulose as well. They produce their own food from organic substances nearby.
