What does the ion S-2 represent?
Comprehensive Phy. Science Review

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Physics, Chemistry
•
6th - 11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Sulfur gains 2 electrons.
2.
FLASHCARD QUESTION
Front
What is the pH of a solution that is considered acidic?
Back
A solution with a pH of less than 7 is considered acidic.
3.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the sum of the protons and neutrons in the nucleus of that atom.
4.
FLASHCARD QUESTION
Front
What does Newton's 3rd Law state?
Back
For every action, there is an equal and opposite reaction.
5.
FLASHCARD QUESTION
Front
What happens to a sodium atom when it loses an electron?
Back
It becomes positively charged.
6.
FLASHCARD QUESTION
Front
What is an ion?
Back
An ion is an atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.
7.
FLASHCARD QUESTION
Front
What is the difference between an acid and a base?
Back
Acids donate protons (H+) in a solution, while bases accept protons.
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