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- 1. Multiple Choice
Which of the following is an example of a chemical change?
water freezes to form ice
sugar dissolves in water
gasoline burns in a car engine
a piece of metal expands when it is heated
- 2. Multiple Choice
A change in the shape of an object is an example of _________________.
a chemical change
energy
an endothermic change
a physical change
- 3. Multiple ChoiceWhich of the following is an example of a chemical change?rusting of a bicyclepainting a housewashing a dogtearing up a newspaper
- 4. Multiple Choice
Which one shows that a chemical reaction has occurred?
dissolving
melting
formation of a gas
bending
- 5. Multiple ChoiceWhich of the following IS a physical change?Getting a haircutRusty metalsour milkA compound
- 6. Multiple ChoiceWhat type of change occurs when a new substance is formed that has different properties from the original substances?chemical changenuclear changephysical changemutation
- 7. Multiple Choice
a copper penny turning greenish after a few years.Chemical ChangePhysical Change - 8. Multiple ChoiceWhich of these is NOT a sign that a chemical change has occurred?A loss of transparencyAn unexpected color changeA temperature changeThe formation of a precipitate
- 9. Multiple ChoiceAn gel ice pack getting cold after you put it in the freezer for an hour.Chemical ChangePhysical Change
- 10. Multiple ChoiceThe smell made from spraying perfume on yourself.Chemical ChangePhysical Change
- 11. Multiple ChoiceThe smell your dog makes after eating to much people food.Chemical ChangePhysical Change
- 12. Multiple ChoiceA chemical change is different than a physical change because in a chemical changeChemicals are usedMolecules do not physically touchA new substance is formed and in a physical change no new substance is formedThe change can be seen but in a physical change it cannot
- 13. Multiple ChoiceWhich of the following is NOT a sign of a chemical reaction?Color changesCutting into fourthsLight is producedGas is formed
- 14. Multiple ChoiceWood burned in a fireplaceChemical ChangePhysical Change
- 15. Multiple ChoiceCake batter baked in an ovenChemical ChangePhysical Change
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