Consider the following experiments, and answer the questions pertaining to classification: a. A pure substance R is heated, cooled, put under pressure, and exposed to light but does not change into anything else. What can be said about classifying substance R as an element or a compound? Explain your reasoning. b. Upon heating, solid pure substance T gives off a gas and leaves another solid behind. What can be said about classifying substance T as an element or compound? Explain your reasoning c. What can be said about classifying the solid left in part b as an element or compound? Explain your reasoning.
Consider the following experiments, and answer the questions pertaining to classification: a. A pure substance R is heated, cooled, put under pressure, and exposed to light but does not change into anything else. What can be said about classifying substance R as an element or a compound? Explain your reasoning. b. Upon heating, solid pure substance T gives off a gas and leaves another solid behind. What can be said about classifying substance T as an element or compound? Explain your reasoning c. What can be said about classifying the solid left in part b as an element or compound? Explain your reasoning.
Solution Summary: The author explains that the classification of pure substance R cannot be made due to lack of information.
Consider the following experiments, and answer the questions pertaining to classification:
a. A pure substance R is heated, cooled, put under pressure, and exposed to light but does not change into anything else. What can be said about classifying substance R as an element or a compound? Explain your reasoning.
b. Upon heating, solid pure substance T gives off a gas and leaves another solid behind. What can be said about classifying substance T as an element or compound? Explain your reasoning
c. What can be said about classifying the solid left in part b as an element or compound? Explain your reasoning.
Match the correct word with the description.
v Blood is an example of
element.
A.
v Air is an example of
B. heterogeneous mixture.
- Nitrogen gas is an example of
C. compound.
Glucose (sugar) is an example
of
D. homogeneous mixture.
Which of the following statements is FALSE?
a. A mixture may be either homogeneous or heterogeneous.
b.Matter may be a pure substance or it may be a mixture.
c. A pure substance may either be an element or a compound.
d. All of these statements are true.
e Mixtures may be composed of two or more elements, two or more compounds, or a combination of both.
Indicate whether each of the following samples of matter is a heterogeneous mixture, a homogeneous mixture, a compound, or an element.
1. a blue-colored, single-phase liquid that when boiled away (evaporated) leaves behind a solid residue
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
2. a "cloudy" liquid that separates into two layers upon standing overnight
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
3. a nonuniform, white crystalline substance, part of which dissolves in alcohol and part of which does not dissolve in alcohol
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
4. a colorless gas that cannot be separated into simpler substances using physical means and that reacts with the metal
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
Chapter 1 Solutions
Chemistry for Today: General, Organic, and Biochemistry
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
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