Discussion List
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Verified by AlloprofSecondary I • 3yr.
Hello,
Could you explain to me how volume works? I don't really understand what it is.
Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
Hello,
My teacher told us that our weight is not the same on Earth and on the Moon, I don't understand why, can you help me please?
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Verified by AlloprofSecondary I • 3yr.
Hello,
Could you explain to me how the beam balance works in the laboratory? I have a lot of difficulty using it.
Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
Can someone remind me how I convert grams (g) to kilograms (kg)?
Thanks a lot!!!
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Verified by AlloprofSecondary I • 3yr.
Hello!
How do you measure the temperature with a thermometer?
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Verified by AlloprofSecondary I • 3yr.
How do you calibrate a beam scale? Either way, I don't understand why this is important.
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Verified by AlloprofSecondary I • 3yr.
What is the difference between the biosphere, the hydrosphere, the lithosphere, and the atmosphere?
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Verified by AlloprofSecondary I • 3yr.
What are the visible structures in animal cells and plant cells under a microscope?
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Verified by AlloprofSecondary I • 3yr.
Hey Alloprof,
What is the difference between Linkage and guidance?
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Verified by AlloprofSecondary I • 3yr.
Can you help me in the following exercise:
"Name the different effects of forces:
- We push on a concrete block
- We pull on a rope
- We twist a rag
- We press on a plank of wood held by two blocks
- We tear a piece of fabric ”
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Verified by AlloprofSecondary I • 3yr.
What is the difference between a helical motion and a rotational motion?
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Verified by AlloprofSecondary I • 3yr.
How do you choose the correct mixture separation technique?
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Verified by AlloprofSecondary II • 3yr.
Hello,
I don't understand the difference between each of these terms: atom, molecule, element and compound.
Can you help me ?
Thanks
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Verified by AlloprofSecondary II • 3yr.
Why do chemical changes in chemistry respect Lavoisier's law (nothing is lost, nothing is created, everything is transformed)? It seems to me that we destroy something in order to create when there is a chemical change...
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Verified by AlloprofSecondary II • 3yr.
What does the phrase "nothing is created, nothing is lost, everything is transformed" mean ?
thank you!
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Verified by AlloprofSecondary I • 3yr.
What is the hydrosphere and what is it useful for? Thank you!
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Verified by AlloprofSecondary III • 3yr.
Hi,
I'd also like to know what is a constraint?
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Verified by AlloprofSecondary III • 3yr.
What are the 4 characteristics of links?
Thanks for your help :)
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Verified by AlloprofSecondary I • 3yr.
Hello! I was wondering if all gases were invisible? Thanks!
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Verified by AlloprofSecondary I • 3yr.
Hi! How do we do the litmus paper test? Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
Hi,
My teacher is asking me to measure the volume of a rock. How do I do that? The sides are not straight ... I cannot measure them!
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Verified by AlloprofSecondary II • 3yr.
Hello again! :)
Why is water not an element but a compound? In fact, I don't quite understand the difference. Do you have a tip?
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Verified by AlloprofSecondary I • 3yr.
How do you calibrate a flail scale? Anyway, I don't understand why this is important.