PosttestDirection. Read the questions carefully. Write the letter of the correct answer.1. Water exists in three states of matter and continuously moving through a cycleon Earth. At which stage in the water cycle does water transform from a gas to aliquid?a.evaporationc. precipitationb. condensationd. Sublimation2.Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Whichof the following is the BEST evidence that a chemical reaction occurs when the coalburns?a. Production of mechanical energy c. A new substance is producedb. Production of electricityd. Formation of precipitate3.Which of these does NOT happen during a chemical change?a. New substances are formed with different chemical properties.b. Attractive force between atoms of molecule formed or break.c. The chemical properties of the substances before and after the reaction arethe samed. Energy is always released or absorbed.4. A granular substance is added to a liquid. Which of the following would supplyevidence to propose a chemical change has taken place?c. The volume of the liquid increases.d. The granules become smaller.a. The granules dissolve completely.b. The liquid gives off heat.5. Which of the following does NOT indicate a chemical change is occurring?c. evolution of gas/bubblesd. phases of matter change.a. formation of precipitateb. color change

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1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation d. Sublimation b. condensation

1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation d. Sublimation b. condensation

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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