Signs of chemical change
Quiz by Stefanie Schmidt
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20 questions
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- Q1Which of the following is an example of a chemical change?Dissolving sugar in waterBurning wood to ashMelting ice into waterCutting paper into pieces30s
- Q2Which of the following is a sign of a chemical change?Change in sizeChange in temperatureFormation of bubblesChange in shape30s
- Q3Which of the following is a common sign that a chemical change has occurred?Change in state of matterRelease of light or heatChange in sizeChange in shape30s
- Q4Which of the following represents a chemical change?Boiling waterCutting a piece of paperRusting of ironMelting of ice30s
- Q5What is a key difference between a physical change and a chemical change?Chemical changes result in the formation of new substancesChemical changes involve a change in statePhysical changes can be easily reversedPhysical changes involve a change in color30s
- Q6What happens during a chemical change?Physical properties remain the sameChemical bonds are broken and new bonds are formedThe state of matter changesTemperature changes occur30s
- Q7Which of the following best describes a chemical reaction?A change in state of matterA physical rearrangement of particlesA process in which substances are transformed into new substances with different propertiesAn increase in temperature30s
- Q8Which observation indicates that a chemical change has occurred?The substance evaporatesA new substance is formedThe substance changes shapeThe substance melts30s
- Q9When a metal rusts, what type of change is taking place?Phase changeThermal changePhysical changeChemical change30s
- Q10Which of the following is an example of a physical change?Rusting ironCooking an eggBurning paperMelting ice30s
- Q11Which of the following is a key indicator that a chemical change has occurred?Formation of a gasChange in temperatureChange in colorChange in state30s
- Q12Which of the following observations is most likely a sign of a chemical reaction?Breaking a glassDissolving sugar in waterEvaporation of waterFormation of a precipitate30s
- Q13Which of these is a sign that a chemical reaction has taken place?Breaking a glassMelting of iceEvaporation of waterChange in color30s
- Q14Which of the following is not a sign of a chemical reaction?Change in positionFormation of a precipitateColor changeEvolution of gas30s
- Q15Which of the following is a sign of a chemical reaction?Change in textureChange in weightRelease of a foul odorChange in shape30s