BrainPOP Periodic Table of Elements

Front

What are alkali metals?

Back

Alkali metals are a group of elements in Group 1 of the periodic table, characterized by having one electron in their outermost shell, making them highly reactive.

Front

What are alkaline earth metals?

Back

Alkaline earth metals are the elements in Group 2 of the periodic table, known for having two electrons in their outermost shell and being less reactive than alkali metals.

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 are noble gases?

Back

Noble gases are elements in Group 18 of the periodic table, known for their lack of reactivity due to having a full valence shell of electrons.

Front

What does 'inert' mean in chemistry?

Back

Inert refers to substances that do not readily react with other substances.

Front

What is the significance of protons in an atom?

Back

Protons determine the atomic number and identity of an element, influencing its chemical properties.

Front

What is the difference between transition metals and poor metals?

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Transition metals are generally harder and have higher melting points compared to poor metals.

Front

What do protons and neutrons make up in an atom?

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Protons and neutrons make up the atomic nucleus.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.