Concept explainers
(a)
Interpretation:
Name of the element present in NaCl should be determined.
Concept introduction:
The element is a pure substance which cannot be broken down to form other substance. The compound can be defined as a substance that contains two or more than two elements by a
(a)
Answer to Problem 67A
Sodium and chlorine
Explanation of Solution
The elements in the compounds are present in a fix ratio that determine its composition and chemical properties. The ratio of the elements present in the compound is represented by a fixed chemical formula. The given compound is sodium chloride (NaCl), which has two elements in it, sodium (Na) and chlorine (Cl).
(b)
Interpretation:
Name of the element present in C2H6O should be determined.
Concept introduction:
The element is a pure substance which cannot be broken down to form other substance. The compound can be defined as a substance that contains two or more than two elements by a chemical bond.
(b)
Answer to Problem 67A
Carbon, hydrogen and oxygen.
Explanation of Solution
The elements in the compounds are present in a fix ratio that determine its composition and chemical properties. The ratio of the elements present in the compound is represented by a fixed chemical formula. The given compound is ethanol (C2H6O), which has three elements in it, carbon (C), hydrogen (H) and oxygen (O), present in a ratio of 2:6:1.
(c)
Interpretation:
Name of the element present in NH3should be determined.
Concept introduction:
The element is a pure substance which cannot be broken down to form other substance. The compound can be defined as a substance that contains two or more than two elements by a chemical bond.
(c)
Answer to Problem 67A
Nitrogen and hydrogen.
Explanation of Solution
The elements in the compounds are present in a fix ratio that determine its composition and chemical properties. The ratio of the elements present in the compound is represented by a fixed chemical formula. The given compound is ethanol (NH3), which has two elements in it, Nitrogen (N) and hydrogen (H) present in a ratio of 1:3.
(d)
Interpretation:
Name of the element present in Br2 should be determined.
Concept introduction:
The element is a pure substance which cannot be broken down to form other substance. The compound can be defined as a substance that contains two or more than two elements by a chemical bond.
(d)
Answer to Problem 67A
Bromine.
Explanation of Solution
The elements in the compounds are present in a fix ratio that determine its composition and chemical properties. The ratio of the elements present in the compound is represented by a fixed chemical formula. The given substance is ethanol (Br2), which has only one element in it, bromine.
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Chemistry: Matter and Change
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