Table of Contents
What is a substance composed of more than one type of atom bonded together?
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.
What are groups of two or more atoms bonded together?
molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
What is a group of atoms bonded together called?
A group of atoms held together by covalent bonds is called a molecule.
Can a substance be composed of more than one type of atom?
No, not at all. An element is a substance that is composed of only one type of atom, meaning all the atoms have the same number of protons and the same properties. Example: Gold is composed of one type of atom. A compound is a substance that is composed of two or more elements chemically bonded together.
Which is a compound composed of more than one element?
A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound. For example, water is a compound composed of the elements hydrogen and oxygen. Today, there are about 118 elements in the known universe.
When does a substance become a compound or an element?
If it is pure, the substance is either an element or a compound. If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture.
What’s the difference between a compound and a mixture?
Compound:a substance that is made up of more than one type of atom bonded together. Mixture: a combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.