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Copy of Covalent Bonds SE GIZMO

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Course: AP Biology

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Name: derin ahmad Date:

Student Exploration: Covalent Bonds

Directions: Follow the instructions to go through the simulation. Respond to the questions and

prompts in the orange boxes.

Vocabulary: covalent bond, diatomic molecule, Lewis diagram, molecule, noble gases, nonmetal, octet rule,

shell, valence, valence electron

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

1. There are eight markers in a full set, but Flora and Frank each only have seven markers. Flora is missing

the red marker, and Frank is missing the blue marker.

What can they do so that each has a full set of markers?

they can give the missing one to the other

2. Otto and Olivia each have six markers. Otto is missing the purple and green markers, and Olivia is missing

the black and brown markers. What can they do so that each has a full set?

otto can share his black and brown markers with olivia and she can share her purple and green

markers with otto

Gizmo Warm-up

Just like the students described above, nonmetal atoms can share

electrons.As you will see in the Covalent Bonds Gizmo, atoms form

bonds in this way.

To begin, check that Fluorine is selected from the Select a

substance menu. Click Play ( ) to see the electrons orbiting the

nucleus of each atom.

1. The outermost electrons in each atom are called valence electrons. How many valence electrons does

each fluorine atom have? 7 valence electrons

2. Click Pause ( ). Drag an electron from the left atom to the right atom. Click Play.

What happens? a circle appears across both and the electron orbits the circle

3. Click Pause, drag an electron from the right atom to the left, and then click Play.

What happens now? 2 electrons are now orbiting the big circle like a bike

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