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When chemicals are weighed on a balance how is the pan protected?
To keep the balance clean and to keep chemicals from mixing with other chemicals. Also some chemicals can react with the metal of the balance pan and cause it to corrode or rust. Always use weighing paper or a small dish or beaker to weigh out chemicals.
When red litmus paper is placed in coke what colour does it change to?
It won't change, it is already red (coke is acid).
When a crystal of copper sulphate is placed at the bottom of beaker having water the water turns blue why?
When a crystal of copper sulfate is placed in water, it dissolves and releases copper ions into the water. These copper ions give the water a blue color due to the absorption and reflection of certain wavelengths of light. This color change is a result of the presence of the copper ions in the solution.
Is buoyancy a physical or chemical change?
Buoyancy is a physical change, not a chemical change. It results from the relationship between an object's density and the density of the fluid it is placed in, causing the object to either float or sink.
Elements were originally placed in order of atomic now they are placed in order of atomic?
Elements were originally placed in order of atomic massnow they are placed in order of atomic number
Which chemicals are placed at the bottom of the periodic table?
Actinides
What is a spotting tile used for?
It is used for Science experiments using chemicals. The dents in the spotting tile are where the chemicals are placed for examination.
Have regulations placed against certain chemicals to reduce damage to ozone layer succeeded?
i am pretty sure that the regulations have succeeded in reducing ozone damage as studies show that the ozone holes are becoming smaller
Why is it that photography can be called either an invention or a discovery?
Because they discovered that certain chemicals mixed with each other placed on certain media can create a copy of what's in front of that certain media, but they had to invent a whole series of machinery to perfect this chemical reaction to the point where it is actually called photography, and the product, a photograph. Hope this helped.
When chemicals are weighed on a balance how is the pan protected?
To keep the balance clean and to keep chemicals from mixing with other chemicals. Also some chemicals can react with the metal of the balance pan and cause it to corrode or rust. Always use weighing paper or a small dish or beaker to weigh out chemicals.
How do pH indicator dyes show a change in pH from acidic to basic or vice versa?
Certain indicators only change colour when placed in a particular pH level or range (e.g. litmus) and others are colourless in certain conditions (e.g. phenolphthalein, leuchomalachite green's second transition).
A plant cell placed in 100 percent water will become Flaccid turgid or no change?
in pure water a cell will become turgid and water will flow in through osmosis.
What is a biohazard safety cabinet.?
What a bio-hazard safety does is keep hazardous chemicals from escaping into the air. If any of the chemicals placed in a bio-hazard safety cabinet were to escape into the air, it could be deadly to anyone who inhales said chemicals.
What is a change in the shape of a rock caused by a force placed on it?
Mechanical change
Why was thrones placed in Egyptian tombs?
Pharaohs thrones were placed in their tombs so that they could become a ruler in the afterlife.
How do things change to stone when hung up in caves?
They don't "change to stone". If placed under a gentle inlet in the right atmospheric conditions, they become coated with calcite that has been dissolved from the limestone above by the ground-water feeding the inlet. So no "change", just coating.
Where should the key of a capo be placed on a guitar to change the pitch of the strings?
The key of a capo should be placed on a specific fret of the guitar to change the pitch of the strings.
