Because water is polar,it can___or dissolve both solids and gases. 因为水是带正电的,所以它能分解固体和气体。(p.19Chemical Structure第6行) ▲break down是个常用词组,我们在高二上册同步讲解中已作过解释,但此处break down作“分解”解。如:①Chemicals in the body break our food down into useful...
water [′wȯd·ər] (chemistry) H2O Clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances; melting point 0°C (32°F), boiling point 100°C (212°F); the chemical compound may be termed hydrogen oxide. ...
What principle can be surmised from the solubility of substances in polar and non-polar solvents? ? A Only ionic substances dissolve in polar solvents. Organic compounds dissolve only in non-polar solvents. Oc lonic and very polar solutes dissolve bes...
Select the correct answer. How does water dissolve substances? A. Water forms hydrogen bonds with molecules that are not polar. B. Water forms hydrogen bonds with polar molecules. C. Water forms covalent bonds with polar molecules. D. Water forms covalent ...
What are the advantages and disadvantages of using sodium carbonate to soften water? Why is NaCl described as a strong electrolyte? Why do non-polar substances not dissolve in water? Explain why calcium sulfate is less soluble in sodium sulfate solution than in pure water. Why is wa...
The formation of sinking particles in the ocean, which promote carbon sequestration into deeper water and sediments, involves algal polysaccharides acting as an adhesive, binding together molecules, cells and minerals. These as yet unidentified adhesive polysaccharides must resist degradation by bacterial ...
The C. socialis strain from the bloom was isolated during the sampling campaign; we grew laboratory monospecific cultures of this diatom, harvested the biomass, performed polysaccharide extraction and the water extract was analysed by anion exchange chromatography (Fig. 2f). Additionally, a total of...
In the Lewis definition of acids and bases, an acid is defined as a substance capable of accepting a pair of nonbonding electrons. On the other hand, a base is defined as a substance that is capable of donating a pair of its nonbonding electrons. In other words, a Lewis acid is an ...
7. There are scam artists and sharks who smell the blood of emotional vulnerability in the water and are using it to their benefit As documentaries such asEscaping Twin FlamesandDesperately Seeking Soulmate: Escaping Twin Flames Universehave come out, it has become increasingly clear thatthe twin...
View Solution A. In dry atmosphere , the relative humidity is low, so the rate of transpiration increases B. Slow breeze promotes the rate of transpiration C. ABA promotes transpiration D. A high salt concentration in soil water increases transpiration ...