2025_Final Exam Mock Exam

Flashcard
•
Science
•
10th Grade
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What are gases at room temperature?
Back
Gases are substances that have weaker intermolecular forces, allowing their particles to move freely and occupy more space.
Tags
NGSS.HS-PS3-2
2.
FLASHCARD QUESTION
Front
What does the Bohr model of the atom represent?
Back
The Bohr model shows electrons circling the nucleus in orbits at different energy levels, but it has limitations in predicting the probable locations of electrons.
3.
FLASHCARD QUESTION
Front
Which model represents the most reactive nonmetals?
Back
Model 1 represents the most reactive nonmetals.
Tags
NGSS.HS-PS1-1
NGSS.HS-PS1-2
4.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change occurs when substances react to form new substances, often indicated by the formation of a precipitate, gas, or color change.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
What is average atomic mass?
Back
Average atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).
6.
FLASHCARD QUESTION
Front
What is the significance of intermolecular forces in determining the state of matter?
Back
Intermolecular forces determine whether a substance is a solid, liquid, or gas; stronger forces lead to solids, while weaker forces lead to gases.
7.
FLASHCARD QUESTION
Front
What is a precipitate?
Back
A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.
Tags
NGSS.MS-PS1-2
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