Which model is used by scientists to determine the properties of elements? A
A Punnett square

B
The Periodic Table

C
A pedigree chart

D
The rock cycle

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.