A car engine uses the combustion of fuel to move a system of gears that move its wheels. Not all of the fuel's energy is transferred to the wheels Which two transformations happen to the rest of the energy?

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

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.