1. ( with covalent and ionic bonding)
Week 9 CCA Test Review
( with covalent and ionic bonding)

2. Labeling an atom
Electron
Neutron
Proton
Nucleus
Energy Level

3. Fill in the table: Positive 1 amu Electron 1 amu No charge
Subatomic Particles
Charge
Proton
Negative
0 amu
Neutron
Positive
1 amu
Electron
No charge
1 amu

4. Atomic mass: the mass of an atom
What is the atomic mass?
Atomic mass: the mass of an atom
Protons
+ Neutrons
Atomic Mass

5. What is the atomic number?
Atomic number: Element number used to show where on the periodic table the element is found. Also, it is the number of protons.
Atomic Number = Number of Protons

6. What are valence electrons?
Atoms in the outside energy level, used to determine reactivity of an atom

7. How can you find the number of neutrons?
Atomic Mass
Atomic Number (protons)
Neutrons

8. How do you know if an atom is neutral?
Protons (positive charges) = Electrons (negative charges)
If it has the same number of positive (protons) and negative (electron) charges
3 positive charges
3 negative charges
Remember: all elements on the periodic table are neutral!

9. Fill in the missing information
Atomic Mass 9
Atomic Number
Protons 4
Neutrons
Electrons
Energy Levels?
Valence Electrons
Is this a stable atom?
Is this a neutral atom?
Element?
Element symbol? 4
2-8-8 Rule
Octet Rule
9 - 4 = 5 2 2
No - Valence level is not full
Yes – protons = electrons
Beryllium Be

10. Bohr Model

11. Octet (2-8-8) Rule First energy level can hold 2 electrons
Second energy level can hold 8 electrons
Third energy level can hold 8 electrons

12. What do valence electrons determine?
They determine how reactive an atom is
1 and 7 valence electrons – most reactive
8 valence electrons – least reactive
Determine how am atom will bond
1 valence electron – give away
7 valence electrons - steal

13. What is an ionic bond? When does this happen
Ionic bond: when valence electrons are given or taken in order for elements to bone
This happens when an atom needs to give or take 1, 2, or 3 valence electrons to be stable

14. What is an covalent bond? When does this happen?
Covalent bond: when atoms bond by sharing valence electrons
This happens when atoms share and become stable

15. How is the Periodic Table arranged?
By atomic number (number of protons)
Groups (valence electrons) and Period (energy levels)
Physical and Chemical properties

16. Color Metals, Non-Metals, and Metalloids

17. Put a circle around the non metals that are gasses

18. Label Groups and Periods

19. Most reactive groups
Group 1
Group 17

20. Least Reactive Group
Noble Gasses – Group 18

21. What information can be found if you know the Period of an element?
Number of energy levels

22. What information can be found if you know the group of an element?
Number of valence electrons
Remember to cover the one on the two digit numbers!

23. Most reactive groups Group 1 Why?
Group 1 only has one valence electron and group 17 only has 7. They are both 1 valence electron away from being stable (happy).
Group 17

24. Least Reactive Group Why?
Group 18 has 8 valence electrons which fills up the valence level, meaning the atom is stable (happy)
Noble Gasses – Group 18

25. Why do elements with similar valence level of electrons have similar chemical properties?
They will react the same way, because they have the same number of valence electrons

26. What has similar physical and chemical characteristics to Nitrogen?
Any element that is in the same family/group
Nitrogen Family

27. Remember: Atomic number = protons
Argon - Protons
Remember: Atomic number = protons
Protons = 18

28. Sodium – Atomic Mass
Atomic Mass = 22
(drop the decimals)

29. Remember: Atomic mass – atomic number = neutrons
Carbon - neutrons
Remember: Atomic mass – atomic number = neutrons
Neutrons = 6

30. Neon – atomic number
Atomic Number = 10

31. Potassium – Valence Electrons
1st group = 1 valence electron
Valence electrons - 1

32. Potassium – Valence Electrons
2nd Period = 2 energy levels
Energy Levels Used - 2

33. Oxygen Bohr Model

34. Review from Unit 1
Physics

35. Newton’s 3 Laws
An object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an outside force
F=ma
For every action there is an equal and opposite reaction

36. Balanced and Unbalanced Forces
Balanced – not moving
Unbalanced – moving (creates a net force)

37. Equations Speed = D/T Acceleration = change in speed/change in time
Force = ma
Work = Force x distance