7, i'm pretty sure, hope I helped!
Answer:
the uses of exothermic reactions are:
1) lighting of stove
2) self heating cans
3) hand warmers
4) in some case exothermic process can be used to cook food such as rice (by adding calcium oxide to water heat is evolved and it helps to cook food )
Explanation:
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Products are copper+ aluminium chloride
reactants are aluminium+copper chloride
The pH scale is used to measure how acidic or alkaline something is.
Hope that helped you!
BRAINLIEST??
Answer:
Kinetic energy is the energy of motion so to figure out that it’s not changing is if the object is still moving. If it’s staying still or is at rest, it is presenting potential energy, which is when energy is being stored inside the object.