1. What are each of these tools used for?

2. You need 11 different colors

3. Families on the Periodic Table
Elements on the periodic table can be grouped into families bases on their chemical properties.
Each family has a specific name to differentiate it from the other families in the periodic table.
Elements in each family
react differently with
other elements.

4. Families on the Periodic Table
The horizontal rows are called periods and are
labeled from 1 to 7.
The vertical columns are called groups or families and are labeled from 1 to 18.

5. How are Atomic Number and Atomic Mass related?

6. Hydrogen Hydrogen belongs to a family of its own.
Hydrogen is a diatomic, reactive gas.
Hydrogen was involved in the explosion of the Hindenberg.
Hydrogen is promising as an alternative fuel source for automobiles
color hydrogen color 1

7. ALKALI METALS Group 1 Hydrogen is not a member, it is a non-metal
1 electron in the outer shell
Soft and silvery metals
Very reactive, esp. with water
Conduct electricity
Color the rest of this group color 2

8. ALKALINE EARTH METALS Group 2 2 electrons in the outer shell
White and malleable metals
Reactive, but less than Alkali metals
Conduct electricity
Color the Alkaline Earth Metals color 3

9. TRANSITION METALS Groups 3-12 Good conductors of heat and electricity.
Some are used for jewelry.
The transition metals are able to put up to 32 electrons in their second to last shell.
Can bond with many elements in a variety of shapes.
Color Transition Metals color 4

10. Transition Metals Elements in groups 3-12 Less reactive harder metals
Includes metals used in jewelry and construction.
Metals used “as metal.”

11. BORON FAMILY Group 13 3 electrons in the outer shell Most are metals
Boron is a metalloid
Color Boron Family color 5

12. CARBON FAMILY Group 14 4 electrons in the outer shell
Contains metals, metalloids, and a non-metal Carbon (C)
Color Carbon Family with color 6

13. Carbon Family Contains elements important to life and computers.
Carbon is the basis for an entire branch of chemistry.
Silicon and Germanium are important semiconductors.

14. NITROGEN FAMILY Group 15 5 electrons in the outer shell
Can share electrons to form compounds
Contains metals, metalloids, and non-metals
Color the nitrogen family with color 7

15. Nitrogen Family Elements in group 15
Nitrogen makes up over ¾ of the atmosphere.
Nitrogen and phosphorus are both important in living things.
Most of the world’s nitrogen is not available to living things.
The red stuff on the tip of matches is phosphorus.

16. OXYGEN FAMILY Group 16 6 electrons in the outer shell
Contains metals, metalloids, and non-metals
Reactive
Color the Oxygen family with color 8

17. Oxygen Family or Chalcogens
Elements in group 16
Oxygen is necessary for respiration.
Many things that stink, contain sulfur (rotten eggs, garlic, skunks,etc.)

18. Halogens Group 17 7 electrons in the outer shell All are non-metals
Very reactive are often bonded with elements from Group 1
Color the Halogen group with color 9

19. Halogens Elements in group 17
Very reactive, volatile, diatomic, nonmetals
Always found combined with other element in nature .
Used as disinfectants and to strengthen teeth.

20. Noble Gases Group 18 Exist as gases Non-metals
8 electrons in the outer shell = Full
Helium (He) has only 2 electrons in the outer shell = Full
Not reactive with other elements
Color the noble gases with color 10

21. The Noble Gases Elements in group 18 VERY unreactive, monatomic gases
Used in lighted “neon” signs
Used in blimps to fix the Hindenberg problem.
Have a full valence shell.

22. Rare Earth Metals Some are Radioactive
The rare earths are silver, silvery-white, or gray metals.
Conduct electricity
Color Rare Earth Metals with color 11

23. Why are these funny?

24. Unit 3, Lesson 6 PHYSICAL SCIENCE
It’s all a BALANCING act

25. Law of Conservation of Mass
What is the law of conservation of mass?
How does this law apply to chemical reactions?

26. 4 Steps to Balancing an Equation
WRITE THIS DOWN…
1. Write the chemical equation with chemical symbols. 2. Count the number of atoms of each element on both sides of the equation. 3. Balance atoms using coefficients. A coefficient is a number placed before the element or compound. 4. Check to make sure the equation is balanced.

27. Let’s Try It…
1. Write the chemical equation with chemical symbols. 2. Count the number of atoms of each element on both sides of the equation. 3. Balance atoms using coefficients. A coefficient is a number placed before the element or compound. 4. Check to make sure the equation is balanced.

28. Using a Table to Help Balance
Type of Atom
Reactants
Products

29. Balance with me…

30. What about this one?

31. Ok on your own now…