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(a)
Interpretation:
Whether brass is homogeneous or a heterogeneous mixture needs to be determined.
Concept introduction:
A pure substance is one that are made up of only one kind of atom or molecule.
Homogeneous mixture is the mixture of two or more substances that are not separable or they are present in the same phase, as the mixture of two gases.
Heterogeneous mixtures are separable and are generally in different phases as sand water, or a mixture of two solids that are separable.
Answer to Problem 82A
Brass is an element hence homogeneous.
Explanation of Solution
Homogeneous mixture is the mixture of two or more substances that are not separable as they are present in the same phase example: the mixture of two gases. Brass that is an alloy of zinc and copper has varying properties from that of zinc and copper.
(b)
Interpretation:
Whether salad is a homogeneous or a heterogeneous mixture needs to be determined.
Concept introduction:
A pure substance is one that are made up of only one kind of atom or molecule.
Homogeneous mixture is the mixture of two or more substances that are not separable or they are present in the same phase, as the mixture of two gases.
Heterogeneous mixtures are separable and are generally in different phases as sand water, or a mixture of two solids that are separable.
(b)
Answer to Problem 82A
Salad is heterogeneous.
Explanation of Solution
Heterogeneous mixtures are separable and are generally in different phases as sand water, or a mixture of two solids that are separable.
Salad is a heterogeneous as the ingredients that are mixed to form a salad are solid and easily separable.
(c)
Interpretation:
Whether blood is a homogeneous or a heterogeneous mixture needs to be determined.
Concept introduction:
A pure substance is one that are made up of only one kind of atom or molecule.
Homogeneous mixture is the mixture of two or more substances that are not separable or they are present in the same phase, as the mixture of two gases.
Heterogeneous mixtures are separable and are generally in different phases as sand water, or a mixture of two solids that are separable.
(c)
Answer to Problem 82A
Blood is homogeneous.
Explanation of Solution
Heterogeneous mixtures are separable and are generally in different phases as sand water, or a mixture of two solids that are separable.
Blood that constitutes different components that are not visible to eye. Though these different components can be seen under a microscope.
(d)
Interpretation:
Whether powered drink dissolved in water is a homogeneous or a heterogeneous mixture needs to be determined.
Concept introduction:
A pure substance is one that are made up of only one kind of atom or molecule.
Homogeneous mixture is the mixture of two or more substances that are not separable or they are present in the same phase, as the mixture of two gases.
Heterogeneous mixtures are separable and are generally in different phases as sand water, or a mixture of two solids that are separable.
(d)
Answer to Problem 82A
Powdered drink dissolved in water is a homogeneous mixture.
Explanation of Solution
Homogeneous mixture is the mixture of two or more substances that are not separable or they are present in the same phase, as the mixture of two gases.
Powdered drink dissolved in water is a homogeneous mixture as they cannot be seen or separated by a filter paper.
Chapter 3 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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