Match the following vocabulary words. 1.
Atomic particle with a positive charge
proton
2. Atomic particle with a neutral charge
atom
3. Having neither a positive nor a negative electrical charge
neutron
4. Atomic particle with a negative charge
electron
5. The smallest part of any object
neutral
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a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2