Elements and the Periodic Table

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, which shows periodic trends in properties.

Front

What are alkali metals?

Back

The group of elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outermost shell.

Front

Which alkali metal reacts vigorously with water?

Back

Potassium is the alkali metal that sets alight when in contact with water.

Front

What is the significance of Dmitri Mendeleev in chemistry?

Back

He is known for creating the first widely recognized periodic table and predicting the existence of undiscovered elements.

Front

What is a non-metal?

Back

Elements that are typically poor conductors of heat and electricity, and are not malleable or ductile.

Front

What property is characteristic of metals?

Back

Metals are malleable, meaning they can be hammered or pressed into shapes without breaking.

Front

What are electrons?

Back

Negatively charged subatomic particles that orbit the nucleus of an atom.

Front

What is atomic number?

Back

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

Front

What is the difference between metals and non-metals?

Back

Metals are generally good conductors of heat and electricity, malleable, and ductile, while non-metals are poor conductors and brittle.

Front

What is a chemical element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means, consisting of atoms with the same number of protons.