Atoms in which the required number of electrons match, form compounds. Atoms form covalent and ionic bonds by sharing their electrons. Why do atoms react to form compounds?Ītoms react with atoms of other elements to form compounds because, every atom wants to attain noble gas configuration. A precipitate is a solid substance that forms in a solution.Ītoms react with other atoms to become stable, which means filling their outer electron shell.Ītoms combine together mainly for two reasons Firstly, they combine together to form various compounds. The chemical properties of the new substances are different from those of the original substances. New substances form when bonds break and new bonds form. How do substances combine or react to make new substances?Ī chemical reaction happens when substances break apart or combine to form one or more new substances. Ionic bonds are when positive and negative bonds attract, which is resulted in sharing an electron. Covalent bonds are when at least one pair of electrons are shared between atoms. Atoms form bonds to other atoms by transferring or sharing electrons.Ītoms form a new substance by sharing electrons with each other. Atoms are made of a positive nucleus surrounded by negative electrons. These outer electrons govern the chemical properties of the element. These are called covalent bonds.Ītoms interact with one another by transferring or sharing electrons that are furthest from the nucleus.

When two atoms share electrons between them, they are locked together (bonded) by that sharing. Electrons can join (or bond) atoms together in two main ways. How do atoms join together to make different substances?Ītoms come together to form molecules because of their electrons. 5 What kind of compounds do elements react with?.4 What indicates a new substance has been formed?.3 Why do atoms react to form compounds?.2 How do substances combine or react to make new substances?.1 How do atoms join together to make different substances?.

Atoms join together to form what