Periodic Table

Front

What are the main categories of elements in the periodic table?

Back

The main categories are metals, nonmetals, and metalloids.

Front

What is a metalloid?

Back

A metalloid is an element that has properties of both metals and nonmetals. Examples include Silicon (Si) and Arsenic (As).

Front

How many groups are there in the periodic table?

Back

There are 18 groups in the periodic table.

Front

What is the significance of the zigzag line in the periodic table?

Back

The zigzag line separates metals from nonmetals and indicates the location of metalloids.

Front

Which element is known as a noble gas?

Back

Noble gases are elements in Group 18, such as Helium (He), Neon (Ne), and Argon (Ar).

Front

What are the properties of metals?

Back

Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.

Front

What are the properties of nonmetals?

Back

Nonmetals are usually dull, poor conductors of heat and electricity, and can be gases, liquids, or brittle solids.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

Front

What is the difference between a period and a group in the periodic table?

Back

A period is a horizontal row, while a group (or family) is a vertical column in the periodic table.