Answer:
A) A solid salt dissolves in water.
Explanation:
A solid, like a salt, dissociates into ions as it dissolves in liquid. The particles (ions) become more spaced apart and with greater randomness. This is increasing entropy.
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A phase change is an example of a physical change.
This is because no new substance is formed. Physical changes affect the form of a substance, and can usually be reversed.
In a chemical change, the substance is changed and one or more new substances are formed.
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Of the main group elements, fluorine has the highest electronegativity (EN = 4.0) and cesium the lowest (EN = 0.79).
Answer:
protons and neutrons
Explanation:
protons and neutrons is equal to mass number
The answer is: sodium and chlorine are products.
Balanced chemical reaction of sodium chloride decomposition:
2NaCl → 2Na + Cl₂.
Decomposition is reaction where one substance is broken down into two or more simpler substances.
From one chemical compound (in this example sodium chloride) two new substances (sodium and chlorine) are produced.