Which of the Following Indicates a Chemical Change

All but i C. By speeding up a chemical reaction.

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Which of the following chemical equations are balanced correctly.

. A change from a liquid to a gasB. Endothermic means to lose energy. Some matter is destroyed c.

Example - P bN O32 s Heat P bO s SO2 g SO3 g The above example depicts a chemical change chemical reaction in which new substances are formed gases evolve and change of odour is observed. A change in state of the substance ex. Which reaction would result in a change in odor indicating a chemical change has occurred.

3 on a question. Which of the following is NOT an example of a physical change. An exploding firecracker b.

An increase in the volume of a substanceC. The shape of an object can be changed and the object will remain the same as its chemical composition. Experts are tested by Chegg as specialists in their subject area.

What happens to matter during a chemical reaction. Change in energy B. Evidence for Chemical Change.

All but ii Wh D. Change in color C. We review their content and use your feedback to keep the quality high.

D Change of odour. The shape of a substance can be changed by a physical change as well as by chemical change. Pb NO32 aq 2KI ------- PbI2 s 2KNO3 aq.

ANSWER - Signs of a chemical change are - i a change in color Example is the reaction between lead nitrate solution and potassium iodide solution. 1-Which of the following indicates that a chemical reaction has occurred. Slicing an apple D.

Crushing a solid into a powder. In a chemical change the chemical composition of the substance changes because of the formation of new substances. All but v 2.

Which of the following indicates that a chemical change has taken place. Absorption or release of heat energy v. The two balanced equations 1 and 2 are for reactions in which gaseous carbon dioxide is produced from the combustion of 1 solid carbon and 2 gaseous carbon monoxide.

A freezing ice cube c. Start studying Chemistry Unit 7 Assignment 1. Which of the following does not indicate a chemical change.

All but i E. Frying an egg C. All choices are correct.

A change in the way atoms are bonded to each other. True or false. The formation of a precipitate is an indication of a chemical change.

Emission of light energy Intr A. How does a catalyst affect chemical change. Which of the following does not indicate that a chemical change may have taken place.

A wire conducting electricity. A change from a solid to a liquidD. Which of the following generally indicates the possibility of a chemical change.

Some matter is created d. Formation of a solid iii. Which of the following indicates that a chemical change has happened during cooking.

2- Quantitative data provides information about exact value of the factors that can be measured. Gas produced from a reaction is a phase change not a chemical change. 3- Which of the following is NOT a correct statement.

Learn vocabulary terms and more with flashcards games and other study tools. A change in the appearance of the substance. Liquid to solid A change in texture of the substance.

Precipitate formation crushing a solid into a powder color change gas evolution. Which is not an evidence that could indicate a chemical change. Which of the following indicates a chemical change.

A change in the color of a substance. Wood breaking into splinters d. Change in shape D.

Matter is neither destroyed or created. Formation of a gas iv.

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