Element

The video tutorial introduces elements as substances that cannot be broken down chemically, each with a unique symbol. It explains the atomic structure of elements, highlighting protons, neutrons, and electrons. The tutorial uses water as an example to illustrate the composition of molecules from elements. It also touches on the mysteries within atoms and ends with a reflective question about the difference between atoms and elements.

What is an element?

• A compound of two or more substances

• A substance that cannot be broken down by chemical means

• A substance that can be broken down by chemical means

• A mixture of different substances

Which of the following is the correct symbol for sodium?

• Na

• So

• S

• Sd

What subatomic particles are found in all elements?

• Protons and neutrons only

• Protons and electrons only

• Protons, neutrons, and electrons

• Electrons and neutrons only

How many hydrogen atoms are in a water molecule?

• One

• Two

• Three

• Four

What is the main difference between atoms and elements?

• Elements and atoms are the same

• Atoms are made up of elements

• Elements are made up of atoms

• Atoms are larger than elements