The weight of an objoct is the product of its mass, m, and the accoloration of gravity, 9 (where- 0.8 m/s?). If an objoct's mass is m=10kg its weight?

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.

How does science use models to gain a better understanding of concepts?