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Here's the information from the image, converted into Markdown format: ## Compounds Throw a few elements together and you end up with some compounds or a mixture. It's getting exciting! ### Compounds Contain Two or More Elements Joined Up 1. When two or more atoms join together, a molecule is m...

Here's the information from the image, converted into Markdown format: ## Compounds Throw a few elements together and you end up with some compounds or a mixture. It's getting exciting! ### Compounds Contain Two or More Elements Joined Up 1. When two or more atoms join together, a molecule is made. 2. Compounds are known as chemical bonds. 3. Millions of compounds can be made from the elements in the periodic table. **Definitions:** * An ELEMENT: Made up of atoms. * An ELEMENT: The atoms are all the same and are not joined up - it must be an element. * A MIXTURE OF different elements: This is not a compound. * A COMPOUND: They have different atoms joined together — it’s a compound alright. ### Compounds Have Different Properties to their Elements 1. In a chemical reaction, chemicals combine together or split apart to form new substances. 2. When new compounds (synthesised compounds) The chemicals you end up with are called products (or reactants). A classic example of this is iron reacting with sulfur. **Practical:** Iron is Magnetic but Iron Sulfide is Not 1. Take a test tube that contains a mixture of iron powder and sulfur. 2. Hold a magnet to the side of the test tube. The mixture will separate. 3. Next, the iron powder will move towards the magnet. This is because iron is magnetic, but sulfur will not. 4. Hold a pre-made sample of iron sulfide in a test tube. * You can't separate the iron from the sulfur. * The magnet can't separate the iron from the sulfur. > You might notice that the iron sulfide has a weak attraction to the magnet — this could be because some of the iron powder hasn't reacted and is trapped inside the iron sulfide. ### Naming Compounds **RULE 1:** When two diffrent elements combine to give. * Sodium and Chlorine give: sodium chloride — NaCl. **RULE 2:** When three...