Its a chemical change because a gas is produced (which is one of the signs of chemical reaction)
That depends. if the substance changed into a totally new thing then its chemically changed. other ways to tell that its a chemical change is if it was tarnished, rusted, burned?
Chemical, because the hydrogen combines with oxygen in the air to create the pop you'll hear.
Light sticks are chemical changes.
Chemical broooooooooooooooo niga
it is a chemical change
Chemical I think
physical as the chemical structure does not change.
It is a physical change. When you supply electricity, the electrons jump to higher energy state. When they come back to their level, it emits energy which falls in the visible region of light. The atoms of the filament (Tungsten) are not going through any change, that changes their chemical properties. Tungsten, still remains tungsten!
Nope. It's a physical change.
No, a metal bar glowing red hot in a fire would be an example of a physical change, not a chemical change.
Coloring causes only a physical change to icing because it does not alter the chemical characteristics of the icing.
both, every chemical change causes a physical change, or the effects would not be apparent or even noticeable.
Chemical broooooooooooooooo niga
it is a chemical change
Chemical I think
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.
physical as the chemical structure does not change.
Physical, chemical and biological change are the three main causes of weathering.
Freezing it should only be a physical (not chemical) change. cutting it in half
A physical change