Ms Millimet August 15 2013 Walk in classroom silently Pick up papers that you need from side table then walk to your seat Keep walking forward do not turn around Check board and Sit down at your desk ID: 715143
Download Presentation The PPT/PDF document "APEMAN – Determining # of Subatomic Pa..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
APEMAN – Determining # of Subatomic Particles
Ms. Millimet
August 15, 2013Slide2
Walk in classroom silently
Pick up papers that you need from side table then walk to your seat (Keep walking forward, do not turn around)
Check board and Sit down at your desk. Write down homework in your planner. Take out have-outs: Study Buddy Binder and Periodic TableStart DO First5 minutes to work on do first, silently and independently
Entrance ProcedureSlide3
SWBAT determine the number of subatomic particles for a neutral atom using the periodic table.
WHY?
Allows us to determine the differences between atoms and elements. This is why materials look and act differently!Tomorrow, we are drawing models of atoms, called Bohr Models!Reach our growth goal and pass/earn commended on STAAR (This is all over it!)ObjectiveSlide4
Quick Reminder:
At which of the following locations in an atom would you find a neutron? a. Orbiting the nucleus b. Orbiting an electron c. Inside the nucleus
d. Inside a proton
Which of the following is found farthest from the center of an atom?
a. Nucleus
b. Proton
c. Neutron
d. ElectronSlide5
Each element or type of atom has a different number of protons, neutrons and electrons, giving them different properties.
We can use the
PERIODIC TABLE to figure out how many subatomic particles an element will have. We know the atomic number tells us how many protons we have… But how do we know how many electrons or neutrons are in each atom?
Atomic StructureSlide6
Step 1: Look at the Periodic Table Square
1
st letter capital2nd
lower case
Number of protons.
Tells you what kind of atom it is.
Protons + neutrons (round to the nearest whole number)
What can we deduce or infer from this information so we can learn more about the element?Slide7
MASS number/ ATOMIC MASS =
Protons + Neutrons
in atomDecimal but, always round to the nearest whole numberWhy don’t we include the number of electrons?Look at the MASS NUMBER/ ATOMIC MASS
ATOMIC MASSSlide8
What element has 47 protons?
What is the Atomic Mass for Sodium?
(*don’t forget to round to the nearest whole number!)What is the Atomic Mass for Chlorine?How many protons does Silicon have?What element has 29 electrons?Check Yourself!Slide9
Atomic number
Protons
Electrons Mass number
-
Atomic number
Neutrons
APE MAN
Note:
We can NEVER assume the number of
NEUTRONS in an atom!In a NEUTRAL or STABLE atom, the number of electrons always equals the number of PROTONS.The atomic number ONLY tells us the # of PROTONS and the atom’s
IDENTITY
.
A NEUTRAL atom has a charge of ZERO. (Protons and Electrons cancel out!)Slide10
How many neutrons are in an atom of
carbon?
Atomic number Protons Electrons Mass number
-
Atomic number
Neutrons
Complete an APE MAN for Carbon
6
6
6 12 6 6Slide11
How many neutrons are in an atom of
nitrogen?
Atomic number Protons Electrons Mass number
-
Atomic number
Neutrons
Use APE MAN to figure out the number of neutrons
7
7
7 14 7 7Slide12
Now you Try!
Let’s say an element has a atomic mass of 40 and an atomic number of 20.
Complete APE-MAN to learn as much as you can about this element!
A = 20
P = 20
E = 20
M = 40
A = 20
N = 20Slide13
APE MAN for Fluorine!
A = 9
P = 9E = 9M = 19A = 9
N = 10Slide14
APE MAN Chlorine…please!
A = 17
P = 17
E = 17
M = 35
A = 17
N = 18Slide15
APE MAN: Neon
A 10
P 10
E 10
M 20
A 10
N 10Slide16
Stretch!
An electrically neutral atom consists of 14 neutrons, 13 electrons, and a number of protons. What is its atomic mass?
a. 13 b. 15 c. 27 d. 30
What element is it?
AluminumSlide17
Complete the APEMAN Practice worksheet independently at Level 1 (whisper)
Finish what you do not complete in class for Homework
Exit ticket with 8 minutes leftPut notes in Study Buddy BinderTake out Red Pen to Trade and GradeKeep out Periodic Table for Exit Ticket Practice and Exit Ticket