Podcast
Questions and Answers
What is the purpose of burning a magnesium ribbon in the activity described?
What is the purpose of burning a magnesium ribbon in the activity described?
- To observe a physical change
- To clean the magnesium ribbon
- To collect ash formed in a watch-glass
- To demonstrate a chemical reaction (correct)
What is the significance of wearing eye protection in the activity?
What is the significance of wearing eye protection in the activity?
- To avoid damage to clothing
- To prevent skin irritation
- To prevent eye damage from burning magnesium (correct)
- To keep the teacher satisfied
How can you tell if a chemical reaction has occurred?
How can you tell if a chemical reaction has occurred?
- By observing a change in color
- By observing a change in volume
- By observing a change in state
- By observing the release of gas or heat (correct)
Why is it recommended to burn the magnesium ribbon away from your eyes?
Why is it recommended to burn the magnesium ribbon away from your eyes?
Which of the following is NOT an example of a chemical change?
Which of the following is NOT an example of a chemical change?
What can be inferred about conducting activities like burning magnesium ribbon?
What can be inferred about conducting activities like burning magnesium ribbon?
What is one observation that helps determine whether a chemical reaction has taken place?
What is one observation that helps determine whether a chemical reaction has taken place?
In the word-equation Magnesium + Oxygen → Magnesium oxide, what are magnesium and oxygen considered as?
In the word-equation Magnesium + Oxygen → Magnesium oxide, what are magnesium and oxygen considered as?
What is the product of the chemical reaction described in the word-equation Magnesium + Oxygen → Magnesium oxide?
What is the product of the chemical reaction described in the word-equation Magnesium + Oxygen → Magnesium oxide?
Which of the following is NOT a way to represent a chemical reaction?
Which of the following is NOT a way to represent a chemical reaction?
What happens when a magnesium ribbon burns in oxygen?
What happens when a magnesium ribbon burns in oxygen?
Which observation is NOT listed as a way to determine if a chemical reaction has occurred?
Which observation is NOT listed as a way to determine if a chemical reaction has occurred?
