In which direction on the periodic table, horizontal or vertical, are elements with similar chemical properties aligned? what are families of elements with similar chemical properties called?

How much energy moves onto the next level, in an energy pyramid

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.