3 chemical properties of matter
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A chemical property is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity. Simply speaking, chemical properties cannot be determined just by viewing or touching the substance; the substance's internal structure must be affected for its chemical properties to be investigated.
Chemical properties can be contrasted with physical properties, which can be discerned without changing the substance's structure. However, for many properties within the scope of physical chemistry, and other disciplines at the border of chemistry and physics, the distinction may be a matter of researcher's perspective. Material properties, both physical and chemical, can be viewed as supervenient; i.e., secondary to the underlying reality. Several layers of superveniency are possible.
Chemical properties can be used for building chemical classifications.
Examples of chemical properties
- Reactivity against other chemical substances
- Heat of combustion
- Enthalpy of formation
- Chemical stability in a given environment
- Preferred oxidation state(s)
- Coordination number
- Capability to undergo a certain set of transformations, for example molecular dissociation, chemical combination, redox reactions under certain physical conditions in the presence of another chemical substance
- Preferred types of chemical bonds to form, for example metallic, ionic, covalent
For example hydrogen has the potential to ignite and explode given the right conditions. This is a chemical property.
Metals in general do they have chemical properties of reaction with an acid. Zinc reacts with hydrochloric acid to produce hydrogen gas. This is a chemical property.
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Answers:Which of the following is a chemical property of matter? a)reactivity (correct) b)hardness c)melting point Indigo, whose chemical formula is C16H10N2O2, contains ____ different types of atoms, and ___ atoms (total) in each molecule. a)4,30 (correct) b)16,4 c)10,30 Which of the folllowing is a physical property of matter? a)density (correct) b)flammability c)reactivity One gram of water, at normal pressure and temperature, occupies one cubic centimeter of volume. What is the density of matter? a)1 g/cm (3) (correct) b)1kg/cm(3) c)1 mg/cm(3) Unlike a mixture, a pure substance has a)fixed composition (correct) b)atoms c)a specific size d)molecules The decomposition of water into hydrogen and oxygen is a(n) a)impossible task b)physical change c)chemical change (correct)
Answers:1. chemical properties are those that deal with the molecular structure of matter (e.g. corrosivity, reactivity of substance for chemical change). on the other hand physical properties (e.g. weight) deal with the physical characterstics of matter. 2. a. double displacement b. single displacement c. decomposition d. combustion e. redox reaction f. complexation 3. CO2 and H2O 4. electrolysis 5. metal protection (coating the metal through electroplating or have a sacrifical metal) 6. a. chemical b. chemical c. physical d. chemical e. physical f. chemical g. physical or chemical h. chemical i. physical j. chemical j. physical (if hardness of water, chemical)