Properties

Question 1

Hyrdrogen

Answer 1

This element does not match the properties of any other group so it stands alone. It is placed above group 1 but it is not part of that group. It is a very reactive, colorless, odorless gas at room temperature (1 outer level electron)

Question 2

Group 1:

Alkali Metals

Answer 2

These metals are extremely reactive & are never found in nature in their pure form. They are silver colored & shiny. Their density is extremely low so that they are soft enough to be cut with a knife (1 outer level electron)

Question 3

Group 2:

Alkaline-Earth Metals

Answer 3

Slightly less reactive & more dense than alkali metals. They are also silver colored (2 outer level electrons)

Question 4

Groups 3-12:

Transition Metals

Answer 4

These metals have a moderate level of reactivity & a wide range of properties. In general, they are shiny & good conductors of heat/electricity. They also have higher densities & melting points than groups 1 & 2 (1 or 2 outer level electrons)

Question 5

Lanthanides & Actinides

Answer 5

These are also transition metals that were taken out & placed at the bottom of the table so the table wouldn’t be so wide. The elements in each of these two periods are shiny & reactive. The actinides are all radioactive & are therefore unstable. Elements 95-103 don’t exist in nature but have been manufactured in a lab

Question 6

Group 13: Boron Group

Answer 6

Contains 1 metalloid & 4 metals. Reactive. Aluminum is in this group. It is also the most abundant metal in the earth’s crust (3 outer level electrons)

Question 7

Group 14: Carbon Group

Answer 7

Contains 1 nonmetal, 2 metalloids, & 2 metals. Varied reactivity (4 outer level electrons)

Question 8

Group 15: Nitrogen Group

Answer 8

Contains 2 nonmetals, 2 metalloids, & 1 metal. Varied reactivity (5 outer level electrons)

Question 9

Group 16: Oxygen Group

Answer 9

Contains 3 nonmetals, 1 metalloid, & 1 metal. Reactive group. (6 outer level electrons)

Question 10

Group 17: Halogens

Answer 10

All nonmetals; very reactive. Poor conductors of heat/electricity. Tend to form salts with metals, e.g. NaCl (sodium chloride) is table salt (7 outer level electrons)

Question 11

Group 18: Noble Gases

Answer 11

Unreactive nonmetals. All are colorless, odorless gasses at room temperature. All are found in earth’s atmosphere in small amounts (8 outer level electrons)