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chemical change
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∙ 12y ago
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What happens when iodine is added to a starch solution?
When iodine is added to starch it turns a blackish color due to a chemical reaction.
How do you change your race to white if you're black?
you should be happy jus the way you are... if I was black I would stay black i mean there is nothing wrong with being black... stop being an idiot
What happens when glucose burns?
glucose is inflammable but the heat will burn the prospect,so glucose will change it's colour ( white to black ) when it turn to black it mean that it's burned
What is an organisms way to express its genotype?
No, the genotype is the genetic composition of the organism. On the other hand, the phenotype is the physical composition of the organism. For example, a gene that causes a bird's feathers to be black in color is the genotype and the phenotype is the actual observable of the black feathers.
What color are the devils eyes?
Red, yellow or black.
When a black soot formed as a candle burns is it a chemical change?
Yes. That is a chemical change.
Is black smoke from a candle a chemical change?
yes.
Is black tea a physical change or chemical change?
physical change
When glass turns black from fire is it a physical or chemical change?
chemical
Is black crust a physical or chemical change?
Chemical, the black spots are the compound silver sulfide.
Is black crystals of iodine turning into purple vapour of iodine a physical change or a chemical change?
if u heated them then its a physical change if u chucked another chemical on them its a chemical change if u did both then its a change of clothes
Is heating copper carbonate a chemical change?
It is a physical change because it has only changed state.
Is mixing powdered sugar and iodine a chemical change?
It's chemical because the iodine turns black instead of its usual red-purple color
How do we know a chemical change has happened?
You can tell if something is a chemical changes or a physical change. Examples: Question 1) Ice melting. Answer 1) Physical change because nothing has changed just the shape of the ice. Reversing ice is easy. Question 2) Wick on a candle changes colour from white to black. Answer 2) Chemical change because it changes from clack to white and will be hard to reverse. So if it is a chemical change taking place it hard to convert back or reverse. You can also tell by the change of colour.
When you burn a marshmallow is it chemical change or physical change?
Toasting a marshmallow is actually a chemical change. The marshmallow becomes black and crispy, it also no longer tastes the same. Thus, it is a chemical change.Roasting a marshmallow is an example of a chemical change. Generally when you heat food in the process of cooking, you will cause a chemical change.
A shiny black solid was heated and formed a purple vapour which on cooling became a black solid again Is this a physical or chemical reaction and explain?
This is a physical change. The solid is Iodine, which sublimes on heating to form gaseous Iodine. When cooled, it sublimes again to form solid Iodine. Since this change is only the change of physical states, and since there's no change in the chemical structure of Iodine, this is a physical change.
Does a chemical change cause a substance to have new physical properties?
It affects it so ya Anyways, water becomes black and shines really bright when it is affected to magnesium and cesium bromide
