Distinguish between ionic bonds, covalent bonds and hydrogen bonds

1 answer:

3 0

To put it simply, ionic bonds form when one atom transfers an electron to another atom. The atom that gains an electron becomes a negative ion while the atom that loses an electron becomes a positive ion. Covalent bonds form when two atoms share electrons. A hydrogen bond is when you have a negatively charged O, N, or F atom in one molecule, a positively charged H atom latched on to an O, N or F atom in another molecule. An example of a hydrogen bond is water.

You might be interested in

Some synovial joints contain special crescent-shaped pads that provide additional shock absorption, and provide for a better fit

Ksivusya [100]

Answer:

menisci

Explanation:

Some synovial joints such as that of knees have crescent-shaped pads. These pads are made up of fibrocartilage and are present between the articular surfaces of the bones. These cartilaginous pads are attached to the fibrous capsule and are called articular discs or menisci.

The function of the menisci is to serve in shock absorption and minimize the wear and tear of the joint. Meniscus also allows the articulating bony surfaces to fit properly and facilitate an adaptable surface for combined movements. Meniscus serves to distribute the weight over a greater contact surface and thereby makes the joint stable. It also spreads the synovial lubricant across the articular surfaces of the joint.

5 0

3 years ago

Quick help plz ......The presence of starch in leaf is tested using

laila [671]

Answer:

The presence of starch in leaves is testing with the Iodine test.

Explanation:

First, chlorophyll is removed from the leaf by boiling it in alcohol.

Then, two drops of iodine solution are put onto the leaf.

If the colour changes to blue, it indicates the presence of starch.

If it does not, there is no starch.

I hope this helps!