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How do you know when a chemical change has taken place when a firework goes off?
youwill hear it
How does a firework take off?
A firework takes off when it is ignited, causing a chemical reaction inside the firework. This reaction produces gas rapidly, building up pressure inside the firework until it eventually forces the firework to launch into the sky.
What changes take place when a firework is set off?
When a firework is set off, a chemical reaction occurs inside the firework shell. The ignition of a fuse ignites the gunpowder, producing rapidly expanding gases. These gases create pressure, leading to the explosion of the firework shell. As a result, colorful sparks, flames, and loud sounds are produced. Fireworks can also contain various chemicals that generate specific colors and effects when they burn.
In a firework show the fireworks explode giving off heat and light is this a chemical change why?
It is a chemical change because the chemical composition is changed during this reaction.
What do you start off with in a chemical reaction?
It is neither, the reaction is the process. The chemicals 'put in' to the reaction are called reactants, and those formed by the reaction are products
What is a chemical reaction that give off heat?
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A chemical reaction that gives off heat is most likely to be what?
An endothermic reaction is one that consumes heat.
Why is it a sign of a chemical reaction if gas is given off?
It is sign of chemical reaction because smell and heat is produced.
What is the scientific word for a gas given off during a chemical reaction?
A reaction that emmits heat is called an exothermic reaction .
When a chemical reaction takes in more energy than it gives off it becomes what?
When a chemical reaction takes in more energy than it gives off, it becomes an endothermic reaction. In an endothermic reaction, energy is absorbed from the surroundings in the form of heat.
Is an apple ripening a reversible change or a chemical reaction and why?
Apple ripening is a chemical reactn (new person answering) It is a chemical reaction because when you think about it, an apples ripening only happens once; apple buds on a tree, goes yellow, goes green, goes red-ish, goes juicy red, is either eaten or falls off the tree, goes mouldy and shrivels up. Hope this answer helped and was improved than the other answer! :)
What is exothermic heat?
It is Heat that is 'given off' by a chemical reaction.
