Multiple Choice
2. What observable change occurs when iodine comes into contact with starch?
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4. BONUS: Lab Techniques and Procedures
Test for Ions and Gases
Back4. BONUS: Lab Techniques and Procedures
Test for Ions and Gases
- Multiple ChoiceWhich of the following methods could a scientist use to identify the anion present in an unknown substance?18views
- Multiple ChoiceWhich of the following is commonly measured using a chemical test in the identification of ions and gases?26views
- Multiple ChoiceWhich test is commonly used to identify the presence of hydrogen gas in a laboratory setting?55views
- Multiple ChoiceWhich color flame is produced by Na^+ ions during a flame test?23views
- Multiple ChoiceWhich term best describes a chemical procedure that yields a positive or negative result indicating the presence of a specific ion or gas?29views
- Multiple ChoiceWhy is phenol red added to the test tubes during ion and gas tests?43views
- Multiple ChoiceWhich of the following reagents is best suited for the detection of starch?36views
- Multiple ChoiceWhich anion will produce a colorless, odorless gas when hydrochloric acid (HCl) is added to its solid or solution?38views
- Multiple ChoiceA student performs a Benedict's test on a sample to detect the presence of reducing sugars. After heating, the solution changes from blue to brick-red. What does this result indicate?27views
- Multiple ChoiceWhich of the following tests is commonly used to determine the carcinogenic potential of a chemical?32views
- Multiple ChoiceWhen iodine comes into contact with starch, which of the following observations is made?23views
- Multiple ChoiceWhich of the following elements can be isolated by electrolysis of aqueous NaCl?14views
- Multiple ChoiceWhen metal ions from Group I and Group II are heated in a flame, what observable phenomenon typically occurs?44views
- Multiple ChoiceWhich test is commonly used to identify the presence of carbon dioxide gas?46views