Chapter 23 Pre-Test

Chapter 23 Pre-Test

Assessment

Flashcard

Chemistry

10th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the balanced chemical equation for the combustion of propane (C3H8)?

Back

@@ ext{C}_3 ext{H}_8 + 5 ext{O}_2 ightarrow 3 ext{CO}_2 + 4 ext{H}_2 ext{O}@@

2.

FLASHCARD QUESTION

Front

What are the products of the combustion of methane (CH4)?

Back

Carbon dioxide (CO2) and water (H2O) are the products.

3.

FLASHCARD QUESTION

Front

What is a double displacement reaction? Provide an example.

Back

A double displacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form different compounds. Example: @@ ext{AgNO}_3 + ext{NaCl} ightarrow ext{AgCl} + ext{NaNO}_3@@.

4.

FLASHCARD QUESTION

Front

Identify the reactants in the chemical equation @@2H_2 + O_2 ightarrow 2H_2O@@.

Back

5.

FLASHCARD QUESTION

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll, primarily converting carbon dioxide and water into glucose and oxygen.

6.

FLASHCARD QUESTION

Front

What is the general formula for combustion reactions?

Back

The general formula for combustion reactions is: Hydrocarbon + Oxygen → Carbon Dioxide + Water.

7.

FLASHCARD QUESTION

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it ensures the law of conservation of mass is followed, meaning the number of atoms of each element is the same on both sides of the equation.

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