What is the atomic number?
PMA 2 Review

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Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
2.
FLASHCARD QUESTION
Front
Where are electrons found in an atom?
Back
Electrons are found in the electron cloud surrounding the nucleus of an atom.
3.
FLASHCARD QUESTION
Front
Which state of matter has the largest space between molecules?
Back
Gas has the largest space between molecules compared to solids and liquids.
4.
FLASHCARD QUESTION
Front
What is a constant in an experiment?
Back
A constant is a factor that remains unchanged throughout the experiment, such as the test given to all classes.
5.
FLASHCARD QUESTION
Front
What is an outcome variable?
Back
The outcome variable is the variable that is measured or counted at the end of an experiment.
6.
FLASHCARD QUESTION
Front
What is the definition of a chemical symbol?
Back
A chemical symbol is a one or two-letter notation used to represent an element on the periodic table.
7.
FLASHCARD QUESTION
Front
What is the difference between a solid, liquid, and gas?
Back
Solids have closely packed molecules, liquids have more space between molecules, and gases have the most space between molecules.
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