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Discussion List
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Secondary II • 3yr.
Hello,
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Thanks a lot!
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Verified by AlloprofSecondary II • 3yr.A chemical reaction between gases takes place and their volume suddenly doubles. True or false: matter was created.
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Verified by AlloprofSecondary II • 3yr.
Hi, I know this is a bit of an easy question, but I'm having a hard time distinguishing between energy and matter.
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Verified by AlloprofSecondary II • 3yr.
What is the difference between photosynthesis and cellular respiration and how to remember it?
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Verified by AlloprofSecondary II • 3yr.
Good afternoon,
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Can you help me?
Thank you!
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Verified by AlloprofSecondary II • 3yr.
What is the difference between the mechanisms of transformation and transmission of movement? I don’t understand.
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Verified by AlloprofSecondary I • 3yr.
At the molecular level, what explains the phase changes?
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Verified by AlloprofSecondary I • 3yr.
Hello, can you help me with one of my homework numbers? It says:
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a) I am an incompressible substance, my particles are ordered, brought together and linked together, and only vibrate.
B) I am a compressible substance, my particles can vibrate and make rotational and translational movements
c) I am an incompressible substance, with undefined volume and my particles are disordered and loosely bound together. ”
Thank you for your help!
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Verified by AlloprofSecondary I • 3yr.
Hello! Let's say I do a pH test with litmus paper and my two papers turned red, what does it mean about my solution?
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Verified by AlloprofSecondary I • 3yr.
Hi! How do we conduct the litmus paper test?
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Verified by AlloprofSecondary I • 3yr.
I don't understand the difference between temperature and heat, can someone help me?
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Verified by AlloprofSecondary I • 3yr.
Why does a hot object change the temperature of a cold object?
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Verified by AlloprofSecondary I • 3yr.
Hello,
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Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
I do not understand the difference between temperature and heat. Could you explain it to me please?
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Verified by AlloprofSecondary II • 3yr.
Hello,
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Thank you for helping me!
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Verified by AlloprofSecondary I • 3yr.
Hi, I am having trouble reading a graduated cylinder. Could you help me?
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Verified by AlloprofSecondary I • 3yr.
Hi,
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I do not understand!?!
Thank you
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Verified by AlloprofSecondary I • 3yr.
Hello,
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Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
Hi, how do you go from mL to cubic meters (m^3)? Thanks in advance!!
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Verified by AlloprofSecondary I • 3yr.
Hello,
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Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
Hello,
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Verified by AlloprofSecondary I • 3yr.
Hello,
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Thanks a lot!
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Verified by AlloprofSecondary I • 3yr.
Can someone remind me how I convert grams (g) to kilograms (kg)?
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Verified by AlloprofSecondary I • 3yr.
Hello!
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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,
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Verified by AlloprofSecondary I • 3yr.
Can you help me in the following exercise:
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- 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?
