Download simple atoms

Name________________________________________ Period___________ Date____________
Objective: SWBAT identify three subatomic particles found in atoms.
SWBAT use the period table of elements to find atomic mass, number of neutrons, and electrons.
Checklist (Check off each item as we complete it)
DO NOW
Activity #1
Activity #2
EXIT TICKET
DO NOW
Directions: Answer the questions based on the picture of the atom below.
1. What parts go in the center of the atom?
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2. Protons have a ___________charge.
3. Electrons have a _______________charge.
4. Neutrons have a __________charge.
Activity #1
ATOMS are the basic building blocks of matter. They make up everything around
you--including air! There are three basic parts of an atom: the PROTON, which has a
positive charge; the NEUTRON, which has no charge and is neutral; and
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the ELECTRON, which has a negative charge. The protons and neutrons make up
the nucleus, which is the core of the atom.
1. Using the words below label the atom.
Proton
Electron
Neutron
Nucleus
THINK, PAIR, AND SHARE
How many protons are in our atom? How do you know?
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Activity #2
The ATOMIC NUMBER is the number of protons there are in the atom.
The ELEMENT SYMBOL is the element’s shorthand or abbreviation
The ATOMIC WEIGHT/ATOMIC MASS is the average mass of an element. You
can find it by adding the protons and neutrons together. The unit of measurement is
the ATOMIC MASS UNIT, or AMU.
What is this element? What are the atomic number, atomic mass, and element
symbol? How many neutrons and electrons should there be?
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1.
Element
Beryllium
Atomic Atomic Mass
Number
4
9amu
Element
Symbol
Be
Number of Neutrons
Number of
Electrons
9amu-4 protons=5neutrons
Helium
Calcium
Lead
***Hint: To find the number of neutrons, students must subtract the atomic number from the atomic
mass (9amu - 4protons = 5neutrons)
2. The atomic number (number at the top) is the amount of _______________and the
amount of ______________.
3. How many protons are in atomic number 19? _____________
EXIT TICKET
1. What are atoms?
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2. Protons=_______________
3. The nucleus is made up of ___________and ______________.
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