Topic: Chemistry
Aim: Describe the structure of an atom.
Do Now:
1. Take out your Atoms reading notes.
2. Length #3 ISA and Volume #1 ISA
HW: Length and Volume Review Sheet
(both sides)
• Length and Volume Exam on Tuesday
• Morning Review for exam on Tuesday
morning at 7:20am (ROOM 326)
LENGTH # 3 ISA
70.7cm
707mm
VOLUME #1 ISA
er and write the amount.
c.
mL
50
Be sure t
mL
100
40
13mL
75
30
50
20
25
10
Matter
Anything that has MASS and takes up
space (VOLUME)
1. Identify the building blocks of
matter.
• Atoms
Meaning of the term
ATOM
Around 2,500 years ago, the
ancient Greek philosopher,
Democritus, was sitting
around just thinking. He was
thinking about cutting stuff up
and came up with the idea
that there must be a point
where you could no longer cut
something any smaller. He
named the atom after the
Greek word atomos, which
means 'that which can't be
split.'
Atomos:
“That which cannot be cut.”
Indivisible
2. Identify the subatomic
particles that make up an atom.
• Protons, neutrons and electrons
3. What is an element’s atomic
number?
• The number of protons in an
atom.
Identify the atomic number of oxygen.
Support your answer.
Observe the diagram below of a Carbon
atom. Identify the atomic number.
Support your answer.
4. Describe what the nucleus of
an atom consists of.
• Protons and Neutrons
5. Where are elections located in
an atom?
• Outside the nucleus
“Orbit” the nucleus in the electron cloud.
6. Explain the meaning of the phrase
“neutrons are neutral.”
Neutrons
• Neutrons
do not
have a
charge.
• Neutrons
are neither
NEGATIVE
or
POSITIVE.
7. Fill in the table below with the
appropriate charge of each particle.
Protons
Electron
Neutron
SUBATOMIC
PARTICLE
CHARGE
(positive,
negative or
neutral)
LOCATION of subatomic
particles (inside the
nucleus OR outside the
nucleus)
Protons
POSITIVE
INSIDE THE NUCLEUS
Electrons
NEGATIVE
OUTSIDE THE NUCLEUS
Neutrons
NEUTRAL
INSIDE THE NUCLEUS
Let’s review:
1. Identify the basic building block of matter.
2. Identify the THREE subatomic particles that
make up an atom.
3. Describe the atomic number of an atom.
4. Describe the structure of an atom.
Review:
All matter is made up of
1. cells
2. atoms
3. molecules
4. compounds
A positively charged particle is
1. an electron
2. a neutron
3. a proton
4. an isotope
Which of the following would be
found outside the nucleus of
an atom?
1. protons
2. electrons
3. neutrons
4. protons and neutrons
A negatively charged particle is
1. an electron
2. a neutron
3. a proton
4. an isotope
The subatomic particle that does
not have a charge is the
1. electron
2. neutron
3. proton
4. isotope
The subatomic particles found
inside the nucleus are
1. electrons and protons
2. neutrons and electrons
3. protons and neutrons
4. protons
The atomic number represents
the
1. number of protons
2. number of electrons
3. number of protons and neutrons
4. number of protons and
electrons
1. Identify the type of
solid in the diagram.
REGULAR SOLID
2. Determine the
volume to the nearest
tenth.
L x W x H
10.0cm x 5.0cm x 3.0cm
= 150.0cm3
1. Identify the type of
solid the toy
dinosaur is.
IRREGULAR SOLID
2. Determine the
volume of the toy
dinosaur.
0.8mL
(5.6mL – 4.8mL)
3. Identify the name of
this method.
DISPLACEMENT
Identify the length of the nail in cm
to the nearest tenth. In mm?
5.1cm
51mm
Oxygen atom
+
-
Oxygen atom
Nucleus
-
-
+
+
+
+
+
+
Electron
+
-
-
Neutron
+
- Proton
-
http://www.youtube.com/watch?v=lP57gEWcisY
http://www.youtube.com/watch?v=R1RMV5qhwy
E
Activity: Element or Compound????
1. Carbon
2. Carbon dioxide (CO2)
3. Water (H2O)
4. Nitrogen
5. Glucose (C6H12O6)
6. Oxygen (O2)
2. Which of the following is not
an element?
1. oxygen
2. sodium chloride
3. hydrogen
4. nitrogen
5. A chemical formula like CO2
represents
1. an element
2. an atom
3. an electron
4. a compound
6. A substance made up of two or
more elements that have
chemically combined is
1. a mixture
2. an atom
3. a compound
4. an element
7. A substance that cannot be
changed into simpler substances
by a chemical change is called a
(an)
1. element.
2. liquid.
3. solid.
4. mixture.
8. Al, Cu, N, and O are symbols
for
1. compounds.
2. elements.
3. mixtures.
4. molecules.
9. A substance that contains only
one kind of atom is called a (an)
1. compound.
2. molecule.
3. element.
4. nucleus.
10. The fact that iron cannot be
changed into a simpler form
indicates that iron is a (an)
1. compound.
2. molecule.
3. element.
4. mixture.
11. If an element is divided into
smaller and smaller parts, the
smallest particle obtained would
be a (an)
1. molecule.
2. compound.
3. mixture.
4. atom.
• http://www.youtube.com/watch?v=d0zION
8xjbM
• http://www.youtube.com/watch?v=O5iaw5
WNuB0&feature=related