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Is adding magnesium and heat chemical or physical change?
Heating magnesium is a physical process.But the reaction of magnesium with oxygen at high temperature is a chemical process.
What question could you ask to help you decide whether silver underwent a chemical change or physical change?
please give me answer
Is burning a pen a chemical change?
A chemical change is when you do something to a material and can never change it back, like when you bake a cake, you might think it's a physical change, but it's actually chemical because you can not change it back to the cake batter. Does that help? ========================== Yes buring a pen is a chemical change.
Why are changes in states of matter physical?
It is a physical change, i.e. it is a change in physical appearance. A chemical change is due to chemical reaction. However, if you see a solid, then you see a liquid, you can instantly tell the difference, chemically you may not (i.e. salts especially) More help needed, its hard to explain.
Is Digesting food Physical Property Or Chemical Property Or Physical Change Chemical Change?
im not 100% sure but i believe its a chemical change mostly because a chemical change is when the molocules themselves change to create something else and physical is when the molocules only rearange themselves they don't change at all. seeing as how when you digest you do change whatever you have eaten by breaking it down with the acids in your stomach turning it into what comes out next.
Pls help on how to right a conclusion on chemical and physical changes lab?
conclusion of chemical and physical change
Is rust physical or chemical change?
Its is chemical as
Is adding magnesium and heat chemical or physical change?
Heating magnesium is a physical process.But the reaction of magnesium with oxygen at high temperature is a chemical process.
Is oil and water being shaken together to make salad dressing a chemical change?
chemical change. the dressing and mayonnaise changed completely to form the sauce.
When a candle burns in air which change occurs first-physical or chemical?
chemical change occurs first. because first oxygen help in burning and form carbon-di-oxide which is a chemical change
What question could you ask to help you decide whether silver underwent a chemical change or physical change?
please give me answer
Is baking a cake a chemical change?
Yes. This is because when the cake is baked, chemicals help it rise, making this a chemical change. Making the icing is a different story. It is a physical change.
Is burning a pen a chemical change?
A chemical change is when you do something to a material and can never change it back, like when you bake a cake, you might think it's a physical change, but it's actually chemical because you can not change it back to the cake batter. Does that help? ========================== Yes buring a pen is a chemical change.
Is a banana changing colors a chemical or physical change?
It's a chemical change. The sunlight stimulates the developing fruit to produce chemicals to help it ripen - in order to spread its seeds.
How can a thermometer be used to help you decide whether your observation is physical or chemical change?
Physical changes are usually very easily reversed. Chemical changes usually show signs of: -Heat being released -Light being released -Precipitate is formed -Color change
Is it a physical change or chemical change when scab forms over an open cut?
It's a physical change. The scab is formed by platelets which are suspended in the person's blood. They clump together to form a solid 'plug' to stop bleeding.
What is the most important difference between a chemical and a physical change?
The chemical change produces one or more new substances, the physical change does not. Many people will tell you that the difference is that chemical changes can't be reversed, but this is an oversimplification used to help students when they are first learning about the types of change. In fact it's possible to reverse chemical changes, though it's sometimes quite difficult. Then again, some physical changes are hard to reverse too.
