Periodic Table Basics Quiz

Which group contains highly reactive metals that form strong bases in water?

• Alkali Metals

• Alkaline Earth Metals

• Transition Metals

• Noble Gases

Answer explanation

Alkali Metals, found in Group 1 of the periodic table, are highly reactive and readily form strong bases when they react with water, making them the correct choice for this question.

How many groups are in the Periodic Table?

• 8

• 18

• 12

• 16

Answer explanation

The Periodic Table has 18 groups, which are the vertical columns that categorize elements based on similar properties. Each group contains elements with similar chemical behavior.

Which of the following elements is a metalloid?

• Silicon

• Sodium

• Oxygen

• Iron

Answer explanation

Silicon is classified as a metalloid due to its properties that are intermediate between metals and nonmetals. Sodium is a metal, oxygen is a nonmetal, and iron is a metal, making silicon the only metalloid in the options.

The Periodic Table has ___ periods (horizontal rows) and ___ groups (vertical columns).

• 6 periods, 18 groups

• 7 periods, 18 groups

• 7 periods, 16 groups

• 6 periods, 16 groups

Answer explanation

The Periodic Table consists of 7 periods (horizontal rows) and 18 groups (vertical columns). This structure organizes the elements based on their atomic number and properties, making '7 periods, 18 groups' the correct answer.

Which group of elements is known as the Noble Gases?

• Group 1

• Group 17

• Group 18

• Group 2

Answer explanation

The Noble Gases are found in Group 18 of the periodic table. They are characterized by their lack of reactivity due to having a full valence shell of electrons, making them stable and inert.

Why do elements in the same group have similar chemical properties?

• Because they have the same number of protons.

• Because they have the same number of neutrons.

• Because they have the same number of valence electrons.

• Because they have the same atomic mass.

Answer explanation

Elements in the same group have similar chemical properties because they possess the same number of valence electrons. This similarity in valence electrons leads to comparable reactivity and bonding behavior.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements in the same period have the same number of electron shells.

• True

• False

Answer explanation

True. Elements in the same period of the periodic table have the same number of electron shells, which corresponds to their principal quantum number. This is a fundamental characteristic of periodicity.

Which of the following elements is found in Group 17?

• Sodium

• Chlorine

• Magnesium

• Neon

Answer explanation

Chlorine is the only element listed that belongs to Group 17, also known as the halogens. Sodium and magnesium are metals in Groups 1 and 2, respectively, while neon is a noble gas in Group 18.

Which of the following elements is a noble gas?

• Oxygen

• Helium

• Sodium

• Chlorine

Answer explanation

Helium is a noble gas, characterized by its lack of reactivity due to a full valence shell. In contrast, oxygen, sodium, and chlorine are not noble gases; they are reactive elements.

Which group of elements is known for being good conductors of heat and electricity?

• Alkali Metals

• Transition Metals

• Halogens

• Noble Gases

Answer explanation

Transition metals are known for their ability to conduct heat and electricity effectively due to their metallic bonding and free-moving electrons, making them excellent conductors compared to the other groups listed.