Nitrogen: 78%
Oxygen: 21%
Noble gases: <1
Carbon dioxide COMPOUND: 0.04%
Water Vapour COMPOUND: Variable
elements
Substances that cannot be chemically broken down into simpler substances are called elements.
Yes my friends. All elements are pure substances that cannot be broken down. However, pure substances aren't all elements.
What are the properties of Elements? elements are substances that CAN be split up. (Y) your mum. What are the properties of Elements? elements are substances that CAN be split up. (Y) your mum.
no
Yes! All of the 'substances' are elements. However elements can join together to make compounds.
The simplest pure substances that cannot be broken down into any other substances are elements. Elements are made up of only one type of atom and cannot be separated into simpler substances by ordinary chemical reactions. Examples include hydrogen, oxygen, and carbon.
Hydrogen and chlorine are chemical elements, not compounds
Sodium and francium are elements. Elements are substances that cannot be broken down into simpler substances by chemical means, whereas compounds are substances composed of two or more elements chemically bonded together.
This would be called an element, or a mono-atomic compound.
elements
Elements.