12 Questions
What observation can help us determine whether a chemical reaction has taken place?
Change in state
In the chemical reaction described in Activity 1.1, what are the reactants?
Magnesium ribbon and oxygen
What is the product formed in the reaction between lead nitrate solution and potassium iodide solution?
Lead iodide
How can chemical equations be made more concise and useful?
Using chemical formulae instead of words
Which side of a word-equation represents the products of a chemical reaction?
Right-hand side (RHS)
What happens when magnesium ribbon reacts with oxygen?
It forms magnesium oxide with a dazzling white flame
What happens when an iron nail is left exposed to humid atmosphere?
Rust forms on the iron nail due to a chemical reaction with oxygen and water vapor.
What change occurs when grapes get fermented?
Chemical change due to fermentation process.
What is the result of burning a magnesium ribbon in air?
Magnesium oxide is formed as a result of a chemical reaction.
How can you distinguish between physical and chemical changes?
Physical changes are reversible while chemical changes are irreversible.
What happens during the process of food getting digested in our body?
Chemical reactions break down complex food molecules into simpler substances.
How can we determine that a chemical reaction has taken place?
Observing the formation of new substances with different properties.
Explore the concept of chemical changes in matter through various daily life situations like food digestion, fermentation, cooking, and more. Understand the difference between physical and chemical changes in matter.
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