compounds
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How are compounds formed
Compounds are formed when atoms from different elements join together
When two or more atoms join it’s called a molecule, what’s the joining of the atoms known as?
It’s known as a chemical bond
Give an example of a compound
CO²
What do molecules in a compound and elements and a mixture of different elements look like
Elements made up of molecules- atoms are joined and they’re all the same Molecules in a compound - different atoms joined together Mixture of different elements - The elements aren’t joined up so it’s a mixture
Explain what a chemical reaction involves
chemical reaction involves chemicals(reactants) from combining together or splitting apart to from one or more new substances (products) - When a new compound a synthesised elements combine - new compounds produced by chemical reactions are always different from the original elements (reactants)
Give the word equation for Iron and sulfur being heated
Iron + sulfur → Iron sulfide the new substance is no longer magnetic
How can you split up a compound back into their original elements
Compounds can be split up if you supply a lot of energy. This makes the reaction go in reverse