Physical Science

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Need help with these questions:

1.When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion?
A.-2
B.-1
C.+2
D.+1

2.Which particle builds a static electrical charge when it is transferred from one object to the other?
A.proton
B.electron
C.atom
D.molecule
I think this one might be A or B...

3.What causes nickel and certain other metals to be magnetic?
A.the influence of earth's magnetic field
B.the motion of protons in their atoms
C.their atoms have more electrons that protons
D.the pattern of electrons in their atoms
A?

Thanks
-MC

  • Physical Science -

    1. What family is calcium in?
    2. If a proton moves, the atom is changed to a new material.
    3. The placement of electrons in energy orbitals results in a net magnetic moment for some atoms.

  • Physical Science -

    So #3 is D?
    -MC

  • Physical Science -

    Nevermind I got the answers
    -MC

  • Physical Science -

    what grade is this

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