Atoms & Elements

Atoms & Elements

1. Definitions

   • Atom
     • is the smallest substance
   • Element
     • is made up of one type of atom only
   • Compound
     • contains two or more types of atoms joined together

2. Types of Reactions

   • A COLOUR CHANGE
     • BUBBLES OF GAS
   • TEMPATURE

3. State Symbols

   • (s)
     • solid
     • (l)
       • liquid
       • [G]
         • AQ
           • DISSOLVE IN WATER
         • GAS

4. Chemical Formulae

5. Chemical Reactions will produce;

6. THER ARE MORE THAN 100 DIFFERANT ELEMENTS

7. mash

8. casaw

9. aash

   • caswc
   • MAKING COMOUNDS

10. A PURE SUBSTANCE IS A ELEMENT

11. THE SMALLEST PART OF A SUBSTANCE IS A ATOM

12. A COMMON USE FOR A METAL MERCURY IS A THEMOMETER

13. THE ONLY METAL LIQUID AT ROOM TEMPATURE IS CHLORINE