Atoms of Elements

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atomic number, The periodic table, number of protons, number of electrons, ATOMS and ELEMENTS, protons and neutrons, mass number, atomic mass, Number of Neutrons, atomic weight

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views:: 89
posted:: 2/3/2010
language:: English
pages:: 5

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Document Sample

Page 1
Atoms of Elements
Name Date

1. Place 6 red beans and 6 white beans in a small mound. This represents the nucleus. Draw a circle
around the nucleus and place 2 green peas anywhere on the circumference/circle. Draw a second circle
around the first circle. Place 4 green peas anywhere on this circumference/circle. Make a drawing of
what you have made on your worksheet and complete the requested information. In your drawing
indicate protons with a +, neutrons with a °, and electrons with a --.

Complete the following Drawing
Atomic number________
Mass number__________
Element name_________
Chemical symbol_______
Charge_________
Number of protons______
Number of neutrons_____
Number of electrons_____

2. Place 1 red bean in the center of your work area. Draw a circle around the red bean. Place 1 green pea
anywhere on the circumference/circle. Draw what you have made and complete the requested
information.

3. Place 8 red beans and 8 white beans in a small mound. Draw a circle around these beans which
represent the nucleus. Place 2 green peas anywhere on the circumference/circle. Draw a second circle
around the first circle. Place 6 green peas anywhere on the circle. Make a drawing of what you have
made and complete the requested information.

4. Place 17 red beans and 18 white beans together in a small mound. Draw a circle around the nucleus.
Place 2 green peas anywhere on the circle. Draw a second circle around the first circle. Place 8 green
peas anywhere on this circle. Draw a third circle around the first two circles. Place 7 green peas
anywhere on this circle. Make a drawing of what you have made and complete the requested
information.

Below is information about two elements from the Periodic Table. Complete the required information.
Draw a diagram of each atom. Round decimals to the nearest whole number.

Drawing Complete the Information

Element name______________
Chemical symbol____________ 7
Number of protons___________ N
Number of neutrons__________ Nitrogen
14.0067
Number of electrons__________
Atomic number______________
Mass number________________
Charge_____________________
2.

Drawing Complete the information

Element name____________
Chemical symbol__________
Number of protons_________ 11

Number of neutrons________
Na
Sodium
Number of electrons________ 22.9898
Atomic number____________
Mass number______________
Charge____________________
Page 4
Making Molecules
Name Date

Water
Make a model of the elements using the beans and peas. You are making a model of one molecule of water.
Make sure that in your model the outer shell of each element is almost touching.

Hydrogen Hydrogen

Oxygen

Methane
Make a model of 4 hydrogen atoms and one carbon atom. You are making a model of one molecule of
methane. Make sure that in your model the outer shell of each element is almost touching.

Hydrogen Hydrogen

Carbon

Hydrogen Hydrogen
Page 5
Atomic Structure and Covalent Bonding Review
Name Date

1. The charge on atoms of elements is __________________.

2. If an atom has 65 protons, the atomic number is____________.

3. If an atom of an element has 30 protons and 35 neutrons, the atomic number is_____, the mass

number is______.

4. The subatomic particles that make up the nucleus of an atom are____________ and ________________.

5. If an atom has 92 protons in an atom, how many electrons will there be in the shells around the

nucleus? ______________

6. If the atomic number of an element is 20 and the mass number is 40, how many protons, neutrons, and

electrons does the atom have? Protons =______ neutrons = _______ electrons = _______.