Periodic Trends and Element Families

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

Answer explanation

The vertical columns in the Periodic Table are called groups. Each group contains elements with similar chemical properties, distinguishing them from periods, which are the horizontal rows.

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

Answer explanation

The noble gases, found in Group 18 of the periodic table, are known for their lack of reactivity due to having a full valence shell of electrons. This makes them inert compared to alkali metals, alkaline earth metals, and halogens.

Elements in a ..................have similar chemical properties.  

• period

• group

• row

Answer explanation

Elements in a group have similar chemical properties because they have the same number of valence electrons, which determines their reactivity and bonding behavior. In contrast, elements in a period have different properties.

Elements in the same column of the periodic table always have the same # of _______ as one another.

• Protons

• Neutrons

• Electrons

• Valence Electrons

Answer explanation

Elements in the same column (group) of the periodic table have the same number of valence electrons, which determines their chemical properties. This is why the correct answer is 'Valence Electrons'.

On the periodic table, the PERIODS are

• the rows that go left to right.

• the columns that got top to bottom.

• the little spot at the end of a sentence.

Answer explanation

On the periodic table, periods refer to the horizontal rows that run from left to right. Each period represents a different energy level of electrons in the elements, distinguishing them from groups, which are the vertical columns.

On the periodic table, the GROUP or FAMILY are

• the rows that go left to right.

• the columns that got top to bottom.

• your people that you have a lot in common with.

Answer explanation

On the periodic table, groups or families refer to the columns that run top to bottom. Elements in the same group share similar chemical properties, unlike rows, which are called periods and run left to right.

Beryllium is in group number______.

• Group 2

• Group 3

• Group 4

• Group 7

Answer explanation

Beryllium is an alkaline earth metal, which is found in Group 2 of the periodic table. This group includes elements that have two electrons in their outer shell, characteristic of their reactivity and properties.

Choose all that apply.

As you move along the periodic table from Left to Right...

• the atomic # increases

• the number of energy levels increases

• the number of valence electrons increases

• The reactivity of the elements increase

Answer explanation

As you move from left to right on the periodic table, the atomic number increases due to the addition of protons. Additionally, the number of valence electrons increases, as elements in the same period have more electrons in their outer shell.

Choose all that apply.

As you move from top to bottom on the periodic table...

• The atomic mass increases

• The number of energy levels/electron shells increases

• The conductivity increases

• The number of valence electrons increases

Select Period 5

Tags

NGSS.MS-PS1-1