Adaptive Practice
Particles and Chemical Change
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Question 1 of 10
⏱ 0:30
Easy
Which of the following is a chemical change?
Easy
What happens to particles during a chemical reaction?
Easy
Which of the following statements is true about the law of conservation of mass?
Medium
In the reaction: 2Mg + O₂ → 2MgO, what type of reaction is this?
Medium
Which of the following indicates a chemical change?
Medium
Why does burning of wood produce ash and smoke?
Medium
Which of the following best explains why sugar dissolving in water is not a chemical change?
Easy
In a chemical reaction, the total mass of reactants is 20 g. According to the law of conservation of mass, the total mass of products will be:
Easy
Which of the following is NOT a sign of a chemical change?
Hard
In the reaction: Zn + 2HCl → ZnCl₂ + H₂, which particle is displaced?