When a substance goes from a solid to a liquid, it is:

What two subatomic particles are found within the nucleus of an atom?

Which of the following subatomic particles does an atom share, gain, or lose when reacting with other atoms?

The atomic number of an element always tells us how many ____ that element has. This number never changes.

Oxygen's atomic number is 8. If the atom is neutral, how many electrons will it have?

If an oxygen atom has 8 protons and 10 electrons, what will it's charge be?

Which subatomic particle has virtually no mass?

How do you find the number of neutrons an atom has?

What is the space around the nucleus called?

An oxygen atom has 8 electrons when it is neutral. How many electrons will it have it the oxygen ion has a charge of -2?

If oxygen has an atomic number of 8 and an atomic mass of 16, how many neutrons does oxygen have?

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