0
Yes, ignition implies burning, which means that you have a very rapid consumption of O2 molecules and the resultant flame. When you think of chemical changes, think of changes that are generally not reversible. like burning wood....you could never go back to the block of wood after it's ashes....that's because the wood has undergone a chemical change in which the actual make-up of the original "wood molecules" has been altered.
On the other hand, physical changes are reversible. These include things like freezing water. The water underwent a physical "appearance" makeover, but the properties that make water what it is have not changed. thus we can reverse the process and go back to liquid water.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Difference between physical and chemical changes?
A chemical change results in the formation of a new substance. Example: igniting hydrogen in oxygen produces water. You can use these clues to determine a chemical change has occured: a colour change, a change in temperature, light and sound,bubbles beginning to form, solid/ semi solid precipitation form, and difficult to reverse it. A physical change is just a change of state or form eg melting ice or grinding salt. physical change can be the bending, cutting ,breaking, dissolving a substance in water (H2o)
Is ignition of alcohol a physical change?
yes it is the water is changing to a gas see there is three most important things Solid, Liquid, Gas and youre changing liquid to a gas/vapour
Is peeling an apple a physical or chemical change?
it is a chemical change
Is Cleaning a painted surface with acid a chemical or physical change?
Chemical broooooooooooooooo niga
Is extraction a physical or chemical change?
No. A physical change is a change that does not change the chemical composition of a substance, while a chemical change does change the chemical composition of a substance.
Is igniting fireworks a chemical or physical change?
chemical
Is igniting a firecracker a chemical change?
Yes, igniting a firecracker is a chemical change. Burning or exploding the firecracker causes a chemical reaction that changes the composition of the materials inside the firecracker, releasing energy in the form of heat, light, and sound.
Is lightning igniting a grass fire a chemical change?
yes
Difference between physical and chemical changes?
A chemical change results in the formation of a new substance. Example: igniting hydrogen in oxygen produces water. You can use these clues to determine a chemical change has occured: a colour change, a change in temperature, light and sound,bubbles beginning to form, solid/ semi solid precipitation form, and difficult to reverse it. A physical change is just a change of state or form eg melting ice or grinding salt. physical change can be the bending, cutting ,breaking, dissolving a substance in water (H2o)
Is burning a fire a physical or chemical change?
Burning is a chemical change.
What is a chemical chage?
a chamical change is when something like your butt explodes into many pieces and you can't glue it back. it is also when you can't poo for seventeen years. thank you come again, no refunds , no checks. we will give free advertisement. must be 18 or older to call. now goodbye
Is ignition of alcohol a physical change?
yes it is the water is changing to a gas see there is three most important things Solid, Liquid, Gas and youre changing liquid to a gas/vapour
What type of change when a substance changes into a new substance?
chemical
Is a rotting banana a chemical or physical change?
It's a chemical change
Is peeling an apple a physical or chemical change?
it is a chemical change
Is cellular respiration an example of a physical change or an chemical change?
its a chemical change
is tarnishing a chemical or a physical change?
It is a chemical change.
