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ASAP please 50 points!!!


Which of the following is a change in physical composition?

A. An iron nail rusting.

B. A purple substance forming when iodine is added to cornstarch.

C. Vinegar bubbling when baking soda is added.

D. A brick being ground up into fine dust.


Which of the following is a change in chemical composition?

A. A white precipitate forming as a result of the combination of two liquids.

B. An aluminum cube is rolled into a flat sheet.

C. Solid butter melting on the stove.

D. Liquid water freezing to form solid ice.


What kind of bond would you expect between H, S and O?

A. Metallic

B. None

C. Ionic

D. Covalent


Which of the following is not one of the three processes of the hydrologic cycle?

A. Evaporation

B. Collection

C. Condensation

D. Precipitation

Respuesta :

Which of the following is a change in physical composition?it could be D. A brick being ground up into fine dust. as this is a change from one physical form to another                                                                                                                             Which of the following is a change in chemical composition?  would be A. A white precipitate forming as a result of the combination of two liquids. as this is a clear chemical change                                                                                What kind of bond would you expect between H, S and O?  i belive it would be D. Covalent                                                                                      

Which of the following is not one of the three processes of the hydrologic cycle?  this gose to B. Collection the water cycle has nothing to do with this so there for its not part of the cycle

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