1. C1a Products from rocks C1a 1 Rocks and building

2. C1a 1 Rocks and Building Atoms, elements and compounds Atoms, elements and compounds Limestone and it’s uses Limestone and it’s uses Decomposing carbonates Decomposing carbonates Quicklime and slaked lime Quicklime and slaked lime Cement, concrete and glass Cement, concrete and glass

3. Learning outcomes Be able to define what an element, atom and compound are Be able to define what an element, atom and compound are Understand the structure of an atom Understand the structure of an atom Be able to describe what happens during a chemical reaction Be able to describe what happens during a chemical reaction

4. 5, 4, 3, 2, 1… Go! Name… Name… 5 solid elements 5 solid elements 4 metal elements 4 metal elements 3 non-metal elements 3 non-metal elements 2 elements which are gaseous at room temperature 2 elements which are gaseous at room temperature 1 element which is liquid at room temperature 1 element which is liquid at room temperature

5. What is everything made of? Over 26 000 000 different materials Over 26 000 000 different materials 5 000 new materials everyday 5 000 new materials everyday All materials are made from atoms All materials are made from atoms Over 100 different types of atom – periodic table Over 100 different types of atom – periodic table

6. Elementary Some substances – made of only one type of atom = Elements Some substances – made of only one type of atom = Elements Copper is an element made up of copper atoms only. Carbon is an element made up of carbon atoms only. Helium is an element made up of helium atoms only.

7. What’s the problem?

8. Symbols Symbols in the Periodic table represent atoms Symbols in the Periodic table represent atoms Elements are arranged into groups Elements are arranged into groups Different group have different properties Different group have different properties hydrogenH = carbon C = fluorineF = oxygenO = nitrogen N = iodineI =

9. Compounds Atoms can join together Atoms can join together 2 or more elements can chemically react together 2 or more elements can chemically react together Compounds Compounds Water is a compound Water is a compound 2 hydrogen atoms (H) 2 hydrogen atoms (H) 1 oxygen atom (O) 1 oxygen atom (O) H 2 O H 2 O

10. Investigating elements Magnesium + oxygen Magnesium + oxygen Magnesium + hydrochloric acid Magnesium + hydrochloric acid Sodium carbonate + iron chloride Sodium carbonate + iron chloride Ammonium + copper sulphate Ammonium + copper sulphate What happens – record you observations What happens – record you observations What is formed? What is formed?

11. Structure of atoms How do chemicals combine? How do chemicals combine? Compounds – 2 or more elements reacted together Compounds – 2 or more elements reacted together Water H 2 0 – hydrogen and oxygen atoms Water H 2 0 – hydrogen and oxygen atoms Atoms react together by transferring electrons Form chemical bonds Very strong

12. Learning outcomes What is the difference between an element, atom and compound? What is the difference between an element, atom and compound? What is an atom made up of? What is an atom made up of? What happens during a chemical reaction? What happens during a chemical reaction?