To become a positive ion, an atom must
A) lose an electron.
B) gain an electron.
C) lose a proton.
D) gain a proton.
Answer: A
You might also like to view...
The Valles Marineris is ________ on the surface of Mars.
A. a long scarp B. a large volcano C. a 4,000-km canyon D. an old riverbed
When is the north polar axis tilted most toward the Sun?
What will be an ideal response?
What evidence do we have that an impact played a role in the extinction of the dinosaurs?
A. The dinosaurs, as well as large numbers of other animals and plants, disappeared rather suddenly. B. Astronomers have found evidence for a 65-million-year-old impact crater in the Yucatán. C. There is iridium (rare on Earth, but abundant in meteors) and soot (evidence of widespread fires) in a layer of clay laid down 65 million years ago. D. All of these choices are correct.
Geminga pulses strongly in gamma rays, and may be the closest neutron star. Why is it unusual?
What will be an ideal response?