For his science fair experiment, cole decided to determine how different types, of surface material , affect how fast a matchbox car will go. he chose to use a tile floor, concrete patio and carpet. he used the same car for each of the 20 trails. he measured the distances the car went after riding down a 1 meter-ramp. what is cole's test ( independent) variable? what is cole's outcome ( dependent) variable) ? what must be kept constant ( the same) for every trail? what do you predict will happen and explain why.

this transfer is call conjunction

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.