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(a)
Interpretation:
The number element or compounds present in sample (a) is to be identified.
Concept introduction:
An element can be defined as the simplest type of matter which is composed of only one kind of atom. Hence elements can be represented by symbols. Elements cannot be broken down into simpler substances by any chemical or physical means. Examples are carbon, hydrogen, oxygen, sulfur, chlorine, etc.
Compounds are formed by the combination of two or more different elements in a fixed ratio. Compounds are represented by using chemical formulas which contain the alphabetical
A mixture consists of a combination of two or more compounds or elements or a compound and element which are physically intermingled. The components of a mixture are not.
(b)
Interpretation:
The number element or compounds present in sample (b) is to be identified.
Concept introduction:
An element can be defined as the simplest type of matter which is composed of only one kind of atom. Hence elements can be represented by symbols. Elements cannot be broken down into simpler substances by any chemical or physical means. Examples are carbon, hydrogen, oxygen, sulfur, chlorine, etc.
Compounds are formed by the combination of two or more different elements in a fixed ratio. Compounds are represented by using chemical formulas which contain the alphabetical symbols representing the elements they are composed of and numbers which represent the total number of atoms of each element that they are made of.
A mixture consists of a combination of two or more compounds or elements or a compound and element which are physically intermingled. The components of a mixture are not.
(c)
Interpretation:
The number element or compounds in the sample (c) is to be identified.
Concept introduction:
An element can be defined as the simplest type of matter which is composed of only one kind of atom. Hence elements can be represented by symbols. Elements cannot be broken down into simpler substances by any chemical or physical means. Examples are carbon, hydrogen, oxygen, sulfur, chlorine, etc.
Compounds are formed by the combination of two or more different elements in a fixed ratio. Compounds are represented by using chemical formulas which contain the alphabetical symbols representing the elements they are composed of and numbers which represent the total number of atoms of each element that they are made of.
A mixture consists of a combination of two or more compounds or elements or a compound and element which are physically intermingled. The components of a mixture are not.
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Chapter 2 Solutions
Chemistry: The Molecular Nature of Matter and Change
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