Chemical Reactions and Equations

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What is the primary purpose of a word-equation?

To show the chemical formula of the reactants

To describe the process of the reaction

To list the reactants and products (correct)

To calculate the amount of oxygen used

Which side of the arrow do the reactants occupy in a word-equation?

Right-hand side

Left-hand side (correct)

Bottom of the equation

Top of the equation

What is the common characteristic of all the three activities?

Evolution of a gas

Evidence of a chemical reaction (correct)

Change in temperature

Formation of a white powder

What is the direction of the arrowhead in a word-equation?

From reactants to products Signup and view all the answers

What is the product of the reaction between magnesium ribbon and oxygen?

Magnesium oxide Signup and view all the answers

What is the change observed in the conical flask or test tube during Activity 1.3?

An increase in temperature Signup and view all the answers

What is the purpose of adding potassium iodide solution to lead nitrate solution?

To observe the formation of a precipitate Signup and view all the answers

What is the purpose of the plus sign (+) in a word-equation?

To separate the reactants and indicate the ratio Signup and view all the answers

What is formed during the reaction in the example given?

Magnesium oxide Signup and view all the answers

What is the advantage of writing chemical reactions in symbolic form?

It makes the reaction easier to understand Signup and view all the answers

Chemical Reactions and Equations

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Questions and Answers

What is the primary purpose of a word-equation?

Which side of the arrow do the reactants occupy in a word-equation?

What is the common characteristic of all the three activities?

What is the direction of the arrowhead in a word-equation?

What is the product of the reaction between magnesium ribbon and oxygen?

What is the change observed in the conical flask or test tube during Activity 1.3?

What is the purpose of adding potassium iodide solution to lead nitrate solution?

What is the purpose of the plus sign (+) in a word-equation?

What is formed during the reaction in the example given?

What is the advantage of writing chemical reactions in symbolic form?

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