In general, the benefits of smoking greatly outweigh the health risks.

FALSE

Explanation:

Along with nicotine, there are many other dangerous chemicals in tobacco such as tar (a sticky brown carcinogen), carbon monoxide (takes the place of oxygen in the blood), oxidizing chemicals (potentially build up fat on arterial walls), metals and even radioactive compounds. All these compounds can the following negative effects on the respiratory, circulatory, immune and even reproductive systems.

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water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.