0
What else can I help you with?
Do your eyes turn black when you die, or is there another physical change that occurs?
When a person dies, their eyes do not turn black. Instead, the eyes may appear cloudy or glassy due to the loss of moisture and muscle tone. This is a common physical change that occurs after death.
What are the differences between blue, white, and black birds in terms of their physical characteristics and behaviors?
Blue, white, and black birds differ in their physical characteristics and behaviors. Blue birds typically have bright blue feathers, while white birds have white feathers, and black birds have black feathers. In terms of behavior, blue birds are known for their melodious songs, white birds are often seen in flocks, and black birds are known for their intelligence and adaptability.
What happens when iodine is added to a starch solution?
When iodine is added to a starch solution, the iodine molecules will interact with the starch molecules through a process called iodine-starch complex formation. This complex leads to a characteristic color change from the initial colorless solution to a dark blue-black color, indicating the presence of starch in the solution.
If a rabbit has white fur and an ice pack on its back and when you took it off has black fur on that spot what statement can best explain the change that happened?
The ice pack likely caused a physical change in the rabbit's fur color by temporarily reducing blood flow to the area, causing a localized change in pigmentation. Once the ice pack was removed, blood flow returned, resulting in the fur returning to its original color.
What is the difference between a white pigeon and a black pigeon in terms of their physical characteristics and behaviors?
White pigeons and black pigeons differ in their physical appearance and behaviors. White pigeons have light-colored feathers, while black pigeons have dark-colored feathers. In terms of behavior, white pigeons may be more visible in certain environments, while black pigeons may blend in better in darker surroundings. Additionally, there may be variations in their nesting habits and social interactions based on their color.
Is black smoke from a candle a chemical change?
Yes, the black smoke from a candle is a result of a chemical change. It is the incomplete combustion of the wax in the candle, producing carbon particles that are visible as black smoke.
When a black soot formed as a candle burns is it a chemical change?
Yes. That is a chemical change.
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 crystals of iodine turning into purple vapour of iodine a physical change or a chemical change?
The transformation of black crystals of iodine into purple vapor of iodine is a physical change. This is because the change does not involve a change in the chemical composition of iodine; it only involves a change in the physical state from solid to gas.
Is black crust a physical or chemical change?
The formation of black crust on an object is a chemical change because it involves a chemical reaction between the surface of the object and the surrounding environment, resulting in the formation of a new substance with different properties.
Is Melting coin being heated and turn black this is used as a test for metal a chemical or a physical change?
The melting of a coin due to heat is a physical change as it alters the physical state of the coin from solid to liquid without changing its chemical composition. The black color that appears is likely due to the formation of an oxide layer on the surface of the coin, also a physical 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.
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.
Is heating copper carbonate a chemical change?
Yes, heating copper carbonate is a chemical change because it undergoes thermal decomposition to form new substances, copper oxide and carbon dioxide. This is a chemical reaction that results in the formation of different compounds with distinct properties.
By heating green copper carbonate so that it changes to black copper oxide will this be a chamical or physical change?
The change from green copper carbonate to black copper oxide is a chemical change because it involves a chemical reaction where the chemical composition of the substance is altered. The color change indicates a new substance has formed, making it a chemical change.
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.
