Wy
1. displacement reactions
(a) fluorine + sodium bromide → sodium fluoride + bromine
(b) fluorine + sodium chloride → sodium fluoride + chlorine
c) chlorine + potassium bromide → potassium chloride + bromine
1) bromine + potassium lodide → potassium bromide + lodine

There are main groups in the modern periodic table of elements

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

What relationship exists between an enzyme and a catalyst?