1. Atoms and Elements
8.P.1.1

2. Warm up Circle all that apply:
The particles of a solid ______________ when the temperature increases.
A. Slow down
B. Spread out
C. Speed up

3. https://www.youtube.com/watch?v=R1RM V5qhwyE
video

4. Atoms Atoms are the basic building blocks of matter
-smallest particle of an element

5. Elements
Elements- basic substances that combine to form all other substances
-cannot be broken down into simpler substances
Pure substance- has the same chemical composition throughout

6. Atoms and their parts Atoms are made up of 3 parts
Protons- positive charge + (found in nucleus)
Neutrons-Neutral (found in nucleus)
Electrons- negative charge – (outside of nucleus)

7. Atoms and their parts Nucleus- center of atom Electron clouds-
Area outside of the
nucleus where
electrons can be found

8. Left side page activity
Draw and label an atom
include the following parts
*electron
*proton
*neutron
*nucleus
*electron cloud
INCLUDE COLOR

9. Protons and electrons

10. Valence Electron Has a negative charge
Located in the outer shell of the atom
Can participate in chemical bonding

11. Lewis Dot Diagram
Used to determine the amount of valence electrons in an atom
# of valence electrons can be found by locating the group the element is in.
Located in group 17

12. Group number tells you valence electrons