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| Question | Answer |
| Chemistry . Topic no/ 1 | Includes : Bonding Atoms, elements and compounds periodic table electron structure |
| What is an atom ? | An atom is a small particle that makes up everything, |
| What is an element ? | An element is a substance made up from 1 type of atom. |
| What is a compound? | A compound is a substance made from two or more elements and are chemically bonded |
| How can you separate the elements in a compound? | By electrolysis or a chemical reaction. |
| What is electrolysis? | A chemical decomposition of passing an electrical current through a solution containing ions |
| What are ions? | Ions are an atom or molecule with an electrical charge due to the loss or gain of electrons |
| What is ionic bonding? | The process of a metal and a non-metal bonding and electrons being passed from the metal to the non-metal causing them both to have full outer shells and a positive or negative charge |
| What is covalent bonding? | The process of two non-metals sharing pairs of electrons. The electrons involved are all part of the outershell |
| What is metallic bonding? | A sea of delocalised electrons. Forms a giant lattice structure. Not a fixed amount of atoms |
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