2. 1111 2222 3333 4444 5555 6666 7777 8888 9999 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Calderglen High School

3. 1.What always happens in a chemical reaction ? A new substance is always formed in a chemical reaction answer Calderglen High School

4. 2.What changes might indicate that a chemical reaction has taken place? Energy change Permanent colour change Gas produced (effervescence) Solid formed in a liquid answer Calderglen High School

5. 3.An element is ……… An element is the simplest type of substance. It is made up of only 1 type of atom. answer Calderglen High School

6. 4.What is a GROUP in the Periodic Table? A column answer Calderglen High School

7. 5.What are the Group 1 elements called? Alkali metals answer Calderglen High School

8. 6.What are the Group 7 elements called? Halogens answer Calderglen High School

9. 7.What are the Group 0 (8) elements called? Noble gases answer Calderglen High School

10. 8.What are compounds? Substances made of two or more different types of atom joined together. answer Calderglen High School

11. 9.What is the difference between a compound and a mixture? The atoms of a compound are joined together. The substances in a mixture are NOT joined and can be easily separated. answer Calderglen High School

12. 10.What element is present in compounds that have names ending in –ate and –ite? oxygen answer

13. 11.What does -ide at the end of the name of a compound indicate? IDE means that the compound is made up of the TWO elements obvious from the name. Except: Hydroxide (something + H + 0) and Cyanide (something + C + N) answer Calderglen High School

14. 12.A solute is ………. A solute is a substance ( usually a solid ) which dissolves in a solvent to form a solution. answer Calderglen High School

15. 13.A solvent is ………… A liquid in which a solute dissolves. answer Calderglen High School

16. 14.What is a SOLUTION? A solution is formed by dissolving a solute (usually a solid) in a solvent (usually a liquid) answer Calderglen High School

17. 15.What is an AQUEOUS SOLUTION? An aqueous solution is one where the solvent used to dissolve the solute is water answer Calderglen High School

18. 16.What is meant by a property of a chemical? A property of a chemical is what it is like or what it can do chemically answer Calderglen High School

19. 17.What is the meaning of the words CONCENTRATED and DILUTE? Concentrated solutions have a large amount of solute in a relatively small volume of solvent. Dilute solutions have a relatively small amount of solute answer Calderglen High School

20. 18.What is a SATURATED solution? A saturated solution is a solution which cannot dissolve any more solute. answer Calderglen High School

21. 19.Where in the Periodic Table would you find the METALS and the NON-METALS? Metals are found to the Left Hand Side of the zigzag line; Non-metals to the Right Hand Side of the zig-zag line answer Calderglen High School

22. 20.What are ATOMS? Atoms are very small, particles which make up every element. They are too small to see. answer Calderglen High School

23. 21.What is a PRECIPITATE? A precipitate is a solid which is formed when two solutions react together answer Calderglen High School

24. 22.What is EFFERVESCENCE? Effervescence is bubbling and fizzing when a gas is given off. answer Calderglen High School

25. 23.Give the SYMBOLS for the elements - lead, gold, sodium, potassium and iron? Lead – Pb Gold – Au Sodium – Na Potassium – K Iron - Fe answer Calderglen High School

26. 24.What is the difference between COLOURLESS and CLEAR? Colourless means having no colour. Clear means you can see through something. answer Calderglen High School

27. SOLUBLE means …….. 25.SOLUBLE means …….. the substance dissolves in the solvent answer Calderglen High School