1. Introduction to Chemistry Nat 51 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15

2. What is a group in the
Periodic Table?
A column of elements

3. What is a period in the Periodic Table?
A row of elements

4. Why are elements placed in the same group ?
They have similar chemical properties.
They have the same number of outer electrons.

5. Give the family name for the elements found in group 1.
Alkali metals

6. In which group do the halogens belong to?

7. Give the family name for the elements found in group 0.
Noble gases

8. What name is given to the elements found between group 2 and group 3 in the Periodic Table?
Transition metals

9. What does the name ending in -ide indicate about a compound?
Two elements joined together

10. What does the name ending in -ate or ite indicate about a compound?
3 elements joined together - one of which is oxygen

11. Name the elements present in sodium silicate.
Sodium, silicon and oxygen

12. Name the elements present in sodium chloride.
Sodium and chlorine

13. Name the elements present in calcium hydroxide.
Calcium, hydrogen and oxygen.

14. What is the difference between a mixture and a compound?
Mixture - different atoms not
chemically joined.
Compound - different atoms joined together

15. A substance made up of one type of atom.
What is an element?
A substance made up of one type of atom.

16. What is the test for oxygen gas?
Relights a glowing splint

17. What is meant by the following terms
What is meant by the following terms? solute, solvent, solution and saturated
Solute - a substance which dissolves in a liquid (soluble)
Solvent - a liquid in which a solid dissolves
Solution - a mixture formed when a solute dissolves in a solvent
Saturated - a solution in which no more substance can dissolve.