If an atom gains electrons, it becomes a

a. negatively charged ion.

b. neutral atom.

c. negatively charged atom.

d. neutral ion.

It's impossible for a hydrogen atom to emit an alpha particle. a. True b. False

If an atom has 32 protons and 38 neutrons, what is it's mass number?

What four elements did the ancient greeks think the world was made of?

How is the atomic number related to core electrons?

How do I write 2.345 X 10^-4cm out of scientific notation?

Which of the following is not a source of air pollution related to human activities

You see rainforests a is far as the eye can see It rains every day and the humidity is fiercel Where might you be? Polar climate Tropical climate Subtropical climate Temperate climate

2. A balloon is dunked into a tank of cold water. How will this affect the size of the balloon?

Which of the following correctly describes a compound?

If the [H+] of a solution is 1.0 x 10 to the power of - 2 mol/L the pH is: (pH = - log (H+] 1 12 -2 2 chemistry