8th Grade physical Science Review
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the periodic table?
Back
The periodic table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.
2.
FLASHCARD QUESTION
Front
Which element has properties similar to bromine (Br)?
Back
Fluorine (F) has properties most similar to bromine (Br).
3.
FLASHCARD QUESTION
Front
What happens to an object's mass and weight when it is moved from Earth to Mars?
Back
The object's mass remains the same, but its weight decreases due to Mars having a weaker gravitational pull.
4.
FLASHCARD QUESTION
Front
What is fuel efficiency in automobiles?
Back
Fuel efficiency refers to how effectively a vehicle converts fuel into motion, often expressed as a percentage of the fuel's chemical energy that is used for movement.
5.
FLASHCARD QUESTION
Front
Why do modern vehicles only achieve about 30% fuel efficiency?
Back
Much of the energy from fuel is transformed into heat rather than being used for motion.
6.
FLASHCARD QUESTION
Front
What is the significance of the three-domain system of classification?
Back
The three-domain system reflects changes in scientific understanding as new evidence arises, showing that scientific theories can evolve.
7.
FLASHCARD QUESTION
Front
What is an atom?
Back
An atom is the smallest particle of an element that retains the element's chemical properties.
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