Answer:
Physical Properties
Explanation:
You are able to see physical properties but are unable to see chemical properties.
Answer:
C. element. oxygen is an element
Explanation:
oxygen is element #8
False
Explanation:
Electron affinity is negative when energy is absorbed and it is positive when energy is released.
Electron affinity is defined as the energy released in adding an electron to a neutral atom in the gas phase.
It is a measure of the readiness of an atom to gain an electron.
In a reaction where energy is released, electron affinity is usually positive. These reactions are called exothermic reactions.
Endothermic reactions in which energy is absorbed have negative electron affinity values.
Learn more:
Endothermic reactions brainly.com/question/12964401
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Al2(SO4)3 would be the formula.
