Chapter 5

Question 1

describes something that repeats or occurs at regular intervals

Answer 1

periodic

Question 2

the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements

Answer 2

periodic law

Question 3

in chemistry, a horizontal row of elements in the periodic table

Answer 3

period

Question 4

a vertical column of elements in the periodic table; elements in a group share chemical properties

Answer 4

group

Question 5

one of the elements of group 1 of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium.

Answer 5

alkali metal

Question 6

one of the elements of group 2 of the periodic table (Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium)

Answer 6

alkaline-earth metal

Question 7

one of the elements of group 17 on the periodic table (Fluorine, Chlorine, Bromine, Iodine, and Astatine

Answer 7

halogen

Question 8

one of the elements of group 18 on the periodic table( Helium, Neon, Argon, Krypton, Xenon, and Radon);noble gases are unreactive

Answer 8

noble gas