Do Now 1. What is an atom? 2. What is an element? 3. What is a molecule? 4. What is a compound?...
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Transcript of Do Now 1. What is an atom? 2. What is an element? 3. What is a molecule? 4. What is a compound?...
Do Now
1. What is an atom?2. What is an element?3. What is a molecule?4. What is a compound?
Answer in complete sentences!Can’t remember? Use your notes or
your textbook.
Homework and Announcements Textbook Pages: 318-321 All questions and
activities
Chapter 9 lesson 1 Vocabulary Chart (pg. 313)
USA TestPrep
Science Fair Projects – Due Friday Complete (Pre-lab forms and Research Summary)
L.O.: SWBAT describe the structure of an atom.
Title: Structure of an atom
Compounds Most elements in nature are found
combined to other elements. A compound is a pure substance made of
two or more different elements chemically combined in a set ratio.
A compound may be represented by a chemical formula, which shows the elements in the compound and the ratio of atoms. For example: H₂O The ratio of hydrogen
atoms to oxygen atoms is 2 to 1.
Compound Review – Remember the Shells? When elements are chemically combined, they form
compounds having properties that are different from those of the uncombined elements.
Example
Calcium (solid) + Carbon (solid) + Oxygen (gas)
= Calcium Carbonate
What is an atom?
Matter “stuff”Made up of
compoundsMade up of
elementsMade up of atoms
Atom Basic particle of
which all elements are made.
How big is a cell anyway?
http://learn.genetics.utah.edu/content/begin/cells/scale
7
http://scaleofuniverse.com
All atoms have the same basic structure with the same three components.
3 components of an ATOM
1. Protons
2. Neutrons
3. Electrons
p
n
What three particles make up an atom?
Share with the members of your group.
Where is each particle found? Atom
1. Protons– Found in the center (or nucleus) of the
atom.
2. Neutrons– Found in the center (or nucleus) of the
atom.
3. Electrons– Found constantly moving around the
nucleus.
p
n
What does an atom look like?
NUCLEUS
(Protons and Neutrons)
CLOUD OF ELECTRONS
(electrons)
+
+ ++ +
PARTICLE SYMBOL CHARGE MASS
PROTON
NEUTRON
ELECTRON
Draw and label the chart as shown below.What are the three particles that make up an atom?
PARTICLE SYMBOL CHARGE MASS
PROTON
NEUTRON
ELECTRON e-
n
p+
Each component is has a symbol.
Each component can be categorized by their charge.
PARTICLE SYMBOL CHARGE MASS
PROTON
NEUTRON
ELECTRON -1
0
+1
e-
n
p+
PARTICLE SYMBOL CHARGE MASS (amu)
PROTON
NEUTRON
ELECTRON -1
0
+1
~ 0(Nearly 0)
1
1
e-
n
p+
Each particle has a specific mass.
Pair-ShareProton, Neutron, or Electron It is the particle of an atom
represented by the symbol (n).
Neutron
It is the particle of an atom with no charge.
Neutron
Pair-ShareProton, Neutron, or Electron
It is the particle of an atom with a mass of zero.
Electron
This particle has a charge of +1.
Proton
Pair-ShareProton, Neutron, or Electron
Name the two particles with a mass of 1(amu).Proton and Neutron
It is the particle that is represented by the symbol e-. Electron
Pair-ShareProton, Neutron, or Electron It is the particle of an atom with a
negative charge.Electron
The two particles located in the nucleus of an atom.Protons and Neutrons
In your notes, draw a model of the following...
Draw a model of an atom.Label the following:
Protons Neutrons Electrons Nucleus
e e
e
e
p
p
p
n
n
n
np
Summary
Write a paragraph (3-4 sentences) reflecting on today’s lesson. What is an atom? What makes up an atom? What symbols are used to describe an atoms
components?
Chapter 9 lesson 1 Vocab.
Are you on task?
Textbook pages 318-321 Answer all question/activitiesVocabulary Chapter 9 lesson 1 (Page 313)
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