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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.
Wiki User
∙ 13y ago
Kaitlyn Hall
A new substance has formed
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What are 3 list of chemical change?
Three examples of chemical changes are rusting of iron, burning of paper, and cooking an egg.
A change in matter that produces new substances is called?
Chemical change. References: Intro to Matter book.
If a substance changes color what has most likely happened chemical or physical change?
Very probable a chemical change; but also physical changes can be the cause.
Is mixing juice crystal a chemical or physical change?
It depends what happened to the glass of juice...? An object is not a change =P
What is evidence that a chemical change has happened?
A substance changes into a new kind of substance.
What are 3 list of chemical change?
Three examples of chemical changes are rusting of iron, burning of paper, and cooking an egg.
How do you know if a change is physical?
A change is physical if the substance's composition remains the same but its physical properties, such as shape, size, or phase, are altered. This type of change can be temporary and reversible. Examples include melting, freezing, or dissolving.
A change in matter that produces new substances is called?
Chemical change. References: Intro to Matter book.
What happened when a new substance has been forme?
a chemical change
What are the five ways to know that chemical reaction happened?
don't know
If a substance changes color what has most likely happened chemical or physical change?
Very probable a chemical change; but also physical changes can be the cause.
Why is food darkening a chemical change?
This darkening involve chemical reactions.
How do you know if a candle is a chemical change?
Can you reverse the change?
Is mixing juice crystal a chemical or physical change?
It depends what happened to the glass of juice...? An object is not a change =P
How do you know that baking bread is a chemical change and not a physical change?
Its a chemical change because its changing what it is (from dough to bread)
Is hydrofluoric acid attacking glass a physical or chemical change?
Does anyone know
What should not be used to indicate a chemical reaction?
Change of shape can not be used to indicate a chemical reaction has happened. Examples of evidence of a chemical reaction are changes in odor or color.
