Physical Science 1st Semester Exam Review
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the advantages of nuclear power?
Back
High energy production, low greenhouse gas emissions, and continuous power generation.
2.
FLASHCARD QUESTION
Front
All changes of the state of matter require ____________.
Back
energy
3.
FLASHCARD QUESTION
Front
Substance that dissolves the solute.
Back
solvent
4.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Atoms with the same number of protons but different number of neutrons.
5.
FLASHCARD QUESTION
Front
According to the octet rule most elements need _______ valence electrons.
Back
8
6.
FLASHCARD QUESTION
Front
What is the definition of a solution?
Back
A homogeneous mixture of two or more substances.
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
Mass is neither created nor destroyed in a chemical reaction.
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