This is the pre-test for Chemistry B. You will receive 10 pts no matter what your score is. However, please try to do your best!
Notify his/her lab partner and then begin clean-up.
Notify his/her teacher and students nearby of broken glassware, then follow instructions about proper clean-up and disposal of broken glassware.
Grab paper towels and begin cleaning up the mess.
Wait until after the laboratory session is over before picking up the glassware; there are less people around so it is safer.
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Once a scientific hypothesis has been proven, it becomes known as a theory.
A scientific hypothesis must be testable, while a theory does not have to be tested.
A scientific hypothesis is a testable assumption, while a theory is a well-verified idea used to explain a broad range of phenomena.
Only a scientific hypothesis is subject to scrutiny, while a theory does not change.
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Rusting bicycle chain
Melting butter
Fireworks exploding
Baking a cake
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The neutron
The electron
The nucleus
The proton
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Surface tension
Capillary action
High specific heat
All of the above
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The substance which does the dissolving
Always the liquid substance
The substance that is being dissolved
Always the solid substance
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Thermal energy is released by the system.
Thermal energy is absorbed by the surroundings.
Thermal energy is not transferred.
The initial and final temperatures of the system remains the same.
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Look at the bottom part of the meniscus
Look at the top part of the meniscus
Average the top and bottom parts of the meniscus
Ignore the meniscus and determine which mL line the liquid is closet to
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2.50 x 10^23
6.02 x 10^24
1.51 x 10^24
2.50 x 10^24
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