Particles and Matter: Elements

The video explains that there are over 100 types of atoms, known as elements. Elements are pure substances made of a single type of atom. Examples include gold, silver, copper, and helium. All matter is composed of elements, and often, matter consists of more than one type of element. For instance, water is made of hydrogen and oxygen, while salt is made of sodium and chlorine.

What is an element?

• A mixture of different atoms

• A pure substance made of a single type of atom

• A compound of multiple elements

• A type of molecule

Which element is represented by the atoms in a ring?

• Copper

• Silver

• Helium

• Gold

What element is found in the gas filling a balloon?

• Carbon Dioxide

• Oxygen

• Helium

• Nitrogen

What elements make up water?

• Sodium and Chlorine

• Hydrogen and Nitrogen

• Oxygen and Sodium

• Hydrogen and Oxygen

Which elements are found in salt?

• Sodium and Chlorine

• Hydrogen and Oxygen

• Carbon and Oxygen

• Nitrogen and Helium