2 - Chemical Changes and Reactions
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Practice Questions
Test your understanding with targeted questions
What is a chemical change?
💡 Hint: Think about changes that form new materials.
List two indicators of a chemical reaction.
💡 Hint: Consider what observable changes you might see.
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Interactive Quizzes
Quick quizzes to reinforce your learning
An endothermic reaction absorbs heat.
💡 Hint: Think of how temperature changes when heat is absorbed.
In a displacement reaction, one element replaces another in a compound.
💡 Hint: Remember how the reactivity of elements affects their ability to replace others.
3 more questions available
Challenge Problems
Push your limits with advanced challenges
A sample of magnesium is burned in the presence of oxygen. Write the balanced equation for the reaction and classify it.
💡 Hint: Identify the two reactants involved in the burning process.
When sulfuric acid reacts with sodium hydroxide, what are the products? Write the balanced equation for this reaction.
💡 Hint: Identify the nature of acids and bases when they react.
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