Magnesium metal, a shiny metallic gray metal, is burned in the presence of oxygen. A bright flame appears and a white brittle solid is formed. Which of the following indicators of a chemical reaction occur. i. formation of a precipitate ii. liberation of a gas iii. change in energy iv. color change i and ii iii and iv. i, ii., and iv. only i.
Magnesium metal, a shiny metallic gray metal, is burned in the presence of oxygen. A bright flame appears and a white brittle solid is formed. Which of the following indicators of a chemical reaction occur. i. formation of a precipitate ii. liberation of a gas iii. change in energy iv. color change i and ii iii and iv. i, ii., and iv. only i.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Magnesium metal, a shiny metallic gray metal, is burned in the presence of oxygen. A bright flame appears and a white brittle solid is formed.
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![**Burning Magnesium: Indicators of a Chemical Reaction**
*Scenario:*
Magnesium metal, a shiny metallic gray metal, is burned in the presence of oxygen. A bright flame appears and a white brittle solid is formed.
*Question:*
Which of the following indicators of a chemical reaction occur?
1. Formation of a precipitate
2. Liberation of a gas
3. Change in energy
4. Color change
*Options:*
- ○ i and ii
- ○ iii and iv
- ○ i, iii, and iv
- ○ only i
*Explanation:*
When magnesium is burned in the presence of oxygen, it reacts to form magnesium oxide, a white brittle solid. This reaction involves observable indicators of a chemical reaction such as the bright flame (change in energy) and color change from metallic gray to white. Precipitate formation and gas liberation do not occur in this specific reaction.
Learn more about chemical reactions and their indicators on [our educational platform].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7bbf8297-dba5-4b47-a922-55444acdea37%2Ffb88d304-3098-49fa-a692-e472008b6a43%2Flp8uz7t_processed.png&w=3840&q=75)
Transcribed Image Text:**Burning Magnesium: Indicators of a Chemical Reaction**
*Scenario:*
Magnesium metal, a shiny metallic gray metal, is burned in the presence of oxygen. A bright flame appears and a white brittle solid is formed.
*Question:*
Which of the following indicators of a chemical reaction occur?
1. Formation of a precipitate
2. Liberation of a gas
3. Change in energy
4. Color change
*Options:*
- ○ i and ii
- ○ iii and iv
- ○ i, iii, and iv
- ○ only i
*Explanation:*
When magnesium is burned in the presence of oxygen, it reacts to form magnesium oxide, a white brittle solid. This reaction involves observable indicators of a chemical reaction such as the bright flame (change in energy) and color change from metallic gray to white. Precipitate formation and gas liberation do not occur in this specific reaction.
Learn more about chemical reactions and their indicators on [our educational platform].
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