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1. ___________ is the energy used to move an object against a force.

a) kinetic energy

b) potential energy

c) heat

d) work

e) Galen-Marek

 

2. All of the ____________ have a valence shell electron configuration of ns2.

a) noble gases

b) halogens

c) chalcogens

d) alkali metals

e) alkaline earth metals

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