12 Questions
What is the purpose of burning a magnesium ribbon in the activity described?
To demonstrate a chemical reaction
What is the significance of wearing eye protection in the activity?
To prevent eye damage from burning magnesium
How can you tell if a chemical reaction has occurred?
By observing the release of gas or heat
Why is it recommended to burn the magnesium ribbon away from your eyes?
To prevent eye exposure to burning magnesium
Which of the following is NOT an example of a chemical change?
Ice melting
What can be inferred about conducting activities like burning magnesium ribbon?
They help in understanding chemical reactions practically
What is one observation that helps determine whether a chemical reaction has taken place?
Evolution of a gas
In the word-equation Magnesium + Oxygen → Magnesium oxide, what are magnesium and oxygen considered as?
Reactants
What is the product of the chemical reaction described in the word-equation Magnesium + Oxygen → Magnesium oxide?
Magnesium oxide
Which of the following is NOT a way to represent a chemical reaction?
Bar graph
What happens when a magnesium ribbon burns in oxygen?
It forms a white powder (magnesium oxide)
Which observation is NOT listed as a way to determine if a chemical reaction has occurred?
Change in texture
Test your knowledge on physical and chemical changes of matter in daily life scenarios. Explore how substances transform in various situations like fermenting grapes, cooking food, and more.
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