Download Notes - Science 2015-2016

Science Starter
1. What information can you gain about Gold (Au) just
from looking at the PToE?
2. Fill in the following information:
Element: Zinc
Atomic Number:
Mass Number:
Number of Protons:
Number of Neutrons:
Number of Electrons:
3. What’s one thing you understood, one
thing you didn’t understand yesterday?
Objective
•SWBAT identify the differences between
neutral atoms, ions, and isotopes.
•SWBAT provide number of protons,
neutrons, and electrons for neutral atoms,
isotopes, and ions.
Agenda
• Science Starter
• Announcements
• Atomic Structure Review
• Isotopes & Ions
• Exit Ticket
Announcements
• Today: Isotopes and Ions
• Thursday: Review
• Friday: Unit 1 Test
• Monday: Unit 2: Intro to the Periodic Table
▫ This includes videos, coloring, etc.
Element
lithium
Carbon
Chlorine
Silver
Number of
Protons
Number of
Neutrons
3
4
6
17
47
Number of
Electrons
Mass
Number
Nuclear
Notation
3
7
6
6
12
18
17
35
7
3 Li
12
6 C
35
Cl
17
60
47
107
107
47
Ag
Unit 1: Chemistry Matters
Isotopes and Ions
February 3, 2016
• Isotopes: atoms that have
the same number of protons
but different number of
neutrons.
▫ Ex: carbon-12 and carbon-14
• The number next to the
element represents the mass
number.
Carbon - 14
Element Name
Mass Number
**** Notice that this is a new notation!****
STOP AND THINK
What are the three types of notations that
we have talked about so far? How do they
differ?
Element
Chemical
Symbol
#
protons
#
#
neutrons electrons
Aluminum-27
Al-27
13
14
13
Aluminum-28
Al-28
13
15
13
Copper- 64
Copper-60
What is different about isotopes of the same
element?
1. ______________
2. ______________
What is the same about isotopes of the same
element?
1. ______________
2. ______________
•We know…
▫ Protons and neutrons are in the _________ ?
▫ Electrons are located __________ ?
• Electrons
▫ Where to they exist?
▫ What charge do they have?
• What is true about protons and electrons in a
NEUTRAL (regular) atom?
Ions
• ION = an atom with a positive or negative charge;
atom with extra or fewer electrons
Think about what charge electrons have.
• Anion: a negative ion
 Does this have MORE or LESS electrons???
• Cation: a positive ion
 Does this have MORE or LESS electrons???
• Let’s draw this so we can see…
Picture of Fl(pluses and minuses)
Picture of Fl(pluses and minuses)
THINK: Can we add or subtract protons to
affect charge?
Substance: Chloride
Symbol: Cl-1
Atomic Number:
Mass Number: 35
Number of Protons:
Number of Neutrons: 18
Number of Electrons:
Substance: Oxide ion
Symbol: O2Atomic Number: 8
Mass Number: 16
Number of Protons:
Number of Neutrons:
Number of Electrons:
Substance: Strontium ion
Symbol: Sr 2+
Atomic Number:
Mass Number: 76
Number of Protons: 38
Number of Neutrons:
Number of Electrons:
What is different about ions of the same element?
1. ______________
2. ______________
What is the same about ions of the same element?
1. ______________
2. ______________
• With a partner at your table, complete the ion
worksheet. You will have approximately 10 minutes.
• Only talk about the task at hand. I will take points off
your grade if you are not!
▫ Once you have decided on an area to work, you may not get
out of your seat unless you ask.
• When you finish, raise your hand, and I will send you to
the solution station to check your answers!
Exit Ticket
Exit Ticket
1. What charge does a cation have?
2. How many electrons does Cl- have?
3. How many protons, neutrons, and electrons in
C-14?
4. Write the nuclear notation for the following
element.
P=7
N=8
E = 10