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3.5 Build an Atom Phet Simulation

Last updated over 3 years ago
28 questions
Link to simulation: https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html
1

Fill out the Table- Number 1 is done for you

1

Why is the H atom neutral (no charge)? Select all that are true

1

What changed when you added 1 neutron to the H atom model?

1

What changed when you added 1 more electron to the H atom model?

1

What changed when you added 1 more proton to the H atom model? (choose all that apply)

1

Changing each particle makes... (Move around the particles on the left column so that it matches what happens when that particle changes)

Draggable itemCorresponding Item
Add/Remove Protons
A new element forms
Add/Remove Neutrons
Same element with a different mass
Add/Remove Electrons
Forms a charge/ion of the same element
1

Move the choice to each category that makes the statement true

  • Electrons
  • Neutrons
  • Protons
  • Atomic Number is the number of __________.
  • Mass Number is the number of protons + _______________.
  • An ion (charge) forms when __________ are added or removed from the atom.
1

Click on Symbol icon at bottom of the page to help you fill out this chart

1

Draw or take a screen shot picture from phet simulation to answer.

1

Choose all that are true

1

Why is atom 9 a positive cation?Were electrons gained or lost in order to form the ion?

1

Draw or take a screen shot picture from phet simulation to answer

1

How would you build a negative ion (anion) for atom 12? Would you need to lose or gain electrons?

1

Draw or take a screen shot picture from phet simulation to answer

1

Draw or take a screen shot picture from phet simulation to answer

1

The TOP NUMBER in the symbol notation for an atom represents the atom's ________________

1

The BOTTOM NUMBER in the symbol notation for an atom represents the atom's ________________

1

A POSITIVE ION is called a ____________________ (cation, ion) and occurs when an atom ______________ (loses, gains) electrons. Choose the two correct terms to fill in blanks

1

A NEGATIVE ION is called a ____________________ (cation, ion) and occurs when an atom ______________ (loses, gains) electrons. Choose the two correct terms to fill in blanks

1

An ISOTOPE occurs when an element has a different ____________ (atomic number, mass number) because the number of _______________ (protons, neutrons, electrons) are different. Choose the two correct terms to fill in blanks

1

What is the valence shell (outermost shell) for Mg?

1

What is the valence shell (outermost shell) for Mg +2?

1

Compare the number of valence electrons in Mg vs. Mg+2. Choose all that are true.

1

Use the valence electrons to explain why Mg+2 is more stable than Mg.

1

Draw or take a screen shot picture from phet simulation to answer

1

Metals such as Magnesium (Mg) easily _________(lose, gain) __________(protons, neutrons, electrons) to fill their valence shell and become __________ (stable, unstable). Choose the three correct terms to fill in blanks

1

Nonmetals such as Fluorine (F) easily _________(lose, gain) __________(protons, neutrons, electrons) to fill their valence shell and become __________ (stable, unstable). Choose the three correct terms to fill in blanks

1

  1. Noble gases such as Helium (He) and Argon (Ar) in group 18 on the periodic table do not form__________(ions, isotopes) because they have the maximum number of valence electrons and are _________ (stable, unstable) as a _________ (neutral, charged) atom. Choose the three correct terms to fill in blanks