Week 2 Revision Homework

Week 2 Revision Homework

1. ATOM - the building blocks of all living things

2. ELEMENT - a group of the same type of atom that has formed chemical bonds

3. COMPOUND - 2 different types of atoms that have formed chemical bonds

4. IONIC BOND - a compound of metals and non metals consisting of ions. The metal atoms lose electrons to form positive ions and the non-metal gains electrons to from negative ions. The opposite charges mean that they're strongly attracted to each other.

5. MASS NUMBER - top number of an element (total number of protons and electrons)

6. ATOMIC NUMBER - the bottom number of an element (number of protons/ electrons)

7. COVALENT BOND - formed from non metals and consists of molecules. Each atom shares an electron with another atom

8. REACTANTS - the things reacted together in a chemical reaction

9. PRODUCTS - the things that are made in a chemical reaction