Ch 11 Vocab

Question 0

Periodic law

Answer 0

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

Question 1

Periodic

Answer 1

Describes something that occurs or repeats at regular intervals

Question 2

Period

Answer 2

In chemistry, it’s a horizontal row of elements in the periodic table

Question 3

Group

Answer 3

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

Question 4

Metals

Answer 4

An element that’s shiny and conducts heat and electricity well

Question 5

Non metals

Answer 5

An element that conducts heat and light poorly

Question 6

Metalloids

Answer 6

Elements that have properties of both metals and nonmetals

Question 7

Semiconductors

Answer 7

An element or compound that conducts an electric current better than an insulator but not as well as a conductor

Question 8

Alkali metal

Answer 8

One of the elements of group 1 of the periodic table

Question 9

Alkine earth metal

Answer 9

One of the elements of group 2 of the periodic table

Question 10

Transition metals

Answer 10

Groups 3-12

Question 11

Lanthanides

Answer 11

Elements in the 1st row that follow lanthanum

Question 12

Actinides

Answer 12

Elements in the 2nd row that follow actinium

Question 13

Halogens

Answer 13

One of the elements in group 17. Halogens combine with most metals to form salts

Question 14

Nobel gases

Answer 14

Elements in group 18; Nobel gases are unreactive