Ice floats in water because ice is less dense than water. However, ice is water, and there is no difference between the two substances. This phenomenon can be explained by the polarity of water. When ice is frozen, the water molecules extend themselves as far as they possibly can but are...
Compounds are the substances made by mixing chemically one or more than one component in a fixed ratio. For example, water is a compound made up of 2 atoms of hydrogen and 1 atom of oxygen.Answer and Explanation: Polarity is the generation of charges in atoms or molecules. This is ...
2c). In other words, this observation indicates growth towards the [0001¯] direction, meaning that surface-guided ZnO nanowires are oxygen-polar. Because the polar ZnO nanowires can grow in opposite directions ±[11¯01¯], and their polarity is dictated by the growth direction rather ...
planar (cell) polarity (or PCP) pathway. This has had two unfortunate effects. One is that the use of these molecules, some of which are involved in aspects ofWnt signalling, in any system is now referred to as use of the PCP pathway, even where there is noa priorireason to suppose ...
Answer to: Explain why water is a polar molecule. What do the polarity and shape of water molecules have to do with their ability to form hydrogen...
aThey are biodegradable (i.e., decomposed from macromolecules to small molecules) and, thus, can be easily removed from the body after completion of their task as a drug carrier. 他们是生物可分解的(即,从大分子分解到小分子),并且,因而,可以从身体容易地被去除在他们的任务的完成以后作为药物载体...
the electroclinic (EC) effect observed in the smectic A phase composed of chiral molecules (SmA*).12,13 The optical axis rotation is proportional to the electric field strength, E, in the EC effect as a result of a linear coupling of the applied electric field and an induced polarization....
For example, in the second row, the nonmetals are: LEARNING OBJECTIVES To introduce the basic principles of covalent bonding, different types of molecular representations, bond polarity and its role in electronic density distributions, and physical properties of molecules. BORON Group III 3 valence ...
T or F: In a covalent molecular compound, the attraction between molecules tends to be strong. 2 T or F: Ionic compounds are usually soluble in polar substances 3 What is the meaning of the term electronegativity? 4 How are the electronegativity values used to determine the type of bond th...
1) What causes some molecules to rotate light? Explain in your own words. (4pts) 2) Discuss your observations in the polarimetry part of the lab. How could you know the molecules are optically active What determines the boiling point of water?