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Mars2501 [29]
3 years ago
6

Which statement describes a chemical property of matter?

Chemistry
2 answers:
Nady [450]3 years ago
8 0

Answer: D. Sodium is a very reactive element that combines easily with nonmetals

Explanation:

Chemical property is defined as the property of a substance which is observed during a reaction where the chemical composition identity of the substance gets changed.

Physical property is defined as the property which can be measured and whose value describes the state of physical system. For Example: State, density etc.

A. The density of ice is 0.4 g/ml is a physical property.

B. The boiling point of ethanol is 78.4^0C is a physical property.

C. Rust is a flaky material with an orange-red color is a physical property.

D. Sodium is a very reactive element that combines easily with nonmetals is a chemical property.

4Na+O_2\rightarrow 2Na_2O

Thus the statement that describes a chemical property of matter is  Sodium is a very reactive element that combines easily with nonmetals.

solniwko [45]3 years ago
6 0
C because rust is a chemical property do you
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creativ13 [48]

Answer:

1. The oxidation half-reaction is: Mn(s) ⇄ Mn²⁺(aq) + 2e⁻

2. The reduction half-reaction is: Ag⁺(aq) + 1e⁻ ⇄ Ag(s)  

Explanation:

Main reaction: 2Ag⁺(aq) + Mn(s) ⇄ 2Ag(s) + Mn²⁺(aq)

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The reduction half reaction occurs where the element decrease the oxidation number, because it is gaining electrons.

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1. The oxidation half-reaction is: Mn(s) ⇄ Mn²⁺(aq) + 2e⁻

2. The reduction half-reaction is: Ag⁺(aq) + 1e⁻ ⇄ Ag(s)  

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