Chemistry

Chemistry, 05.10.2019 14:00, jeifetz1023

Which of the following sentences represents a physical change? sugar dissolves in coffee iron rusts gasoline burns in an engine a candle burns

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Biology, 23.06.2019 17:10, alyssa0888

1. which of the following is a physical change? (2 points) an iron chair rusts when left outside a sample of water boils and releases gas. a plant changes carbon dioxide and water into sugar. a newspaper burns when placed in a fire.

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Chemistry, 04.08.2019 11:30, starfox5454

Which of the following is a result of a physical change? 1. a newspaper burns when placed in a fire. 2. an iron chair rusts when left outside. 3. a sample of water boils and releases gas. 4. a plant changes carbon dioxide and water into sugar. 5. electricity is used to split water molecules into hydrogen and oxygen.

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Biology, 04.08.2019 19:50, Kaycieb

Which of the following is a physical change? a newspaper burns when placed in a fire. an iron chair rusts when left outside. a sample of water boils and releases gas. a plant changes carbon dioxide and water into sugar.

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Chemistry, 21.08.2019 01:30, katieh149

Sort the following situations into chemical change or physical change: 1. salt dissolves in water 2. hydrochloric acid reacts with magnesium to produce hydrogen gas 3. a piece of copper is cut in half 4. a sugar cube is ground up 5. water is heated and changed to steam 6. iron rusts 7. ethyl alcohol evaporates 8. ice melts 9. milk sours 10. sugar dissolves in water 11. sodium and potassium react violently with water 12. pancakes cook on a griddle 13. grass grows on a lawn 14. a tire is inflated with air 15. food is digested in the stomach 16. water is absorbed by a paper towel 17. ethyl alcohol boils at 79 egress celsius 18. paper burns 19. water freezes at 0 degrees celsius 20. fireworks explode 21. alka-seltzer gives off carbon dioxide when added to water 22. clouds form in the sky

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Which of the following sentences represents a physical change? sugar dissolves in coffee iron rusts...

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