A Metal Surface Becomes Dull on Exposure to Air

A physical change is ice melting or breaking. A metal surface becomes dull on exposure to air is a chemical change.

Explain Why The Surface Of Some Metals Acquires A Dull Appearance When Exposed To Air For A Long Time

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. A metal surface becomes dull because of continued abrasion-physical d. 1 See answer Add answer 8 pts oruahkakhara is waiting for your help. Sugar dissolves in hot water A metal surface becomes dull on exposure to air Sugar burns in a pot This problem has been solved.

Reset Help A silver surface becomes tarnished A platinum ring becomes dull because of continued abrasion Sugar burns when. A metal surface becomes dull because of continued abrasion. 456 to calories b.

State reasons- i the shining surface of some metals becomes dull when exposed to air. A metal surface becomes dull because of continued abrasion d. Rusting is a chemical process when the surface of a metal becomes attacked by elements in air or water and it asorbs oxygen or sometimes sulfur to become a compound of it.

A Sugar dissolves in hot water b Sugar burns in a pot c A metal surface becomes dull because of continued abrasion d A metal surface becomes dull on exposure to air e Copper surface turns green on exposure to air and water 2 Classify each of the substance as a pure substance or a mixture. Metal surface becomes dull because of abrasion. If the metal surface becomes dole because of abrasion from the physical process of scratching than this is just physical change.

Changes involving chemical reactions evident by heat or color change are chemical. But the metal surface reacting to to the air is a chemical change. Iimetal sulphides occur mainly in rocks but metal halides occur mostly in sea and lake waters.

Sugar burns in a pot c. But the metal surface reacting to to the air is a chemical change. Correct Exercise 346 Part A In the explosion of a hydrogen-filled balloon 020 of hydrogen reacted with 16 of oxygen.

Also if a metal surface got scratched it is a physical change. Answer Expert Verified 39 5 83 AkashMandal. Rese Physical Chemical A metal surface becomes out because of continued abrasion.

How many grams of water vapor are formed. Classify each of the following changes as physical or chemical. The sample of aluminum foil is 00009 inch.

Perform each conversion a. A metal surface becomes dull on exposure to air Selected Answer. Chemical Change Matter changes its composition.

It is still the same chemical H20. Sugar burns in a pot - chemical c. Calculate the volume of the 100 in x 100 in sample of aluminum by multiplying length x width x thickness.

If the surface becomes dole due to exposure in the air then theres likely something in the air reacting with it causing a change in the appearance of the metal so this would be a chemical change. Also if a metal surface got scratched it is a physical change. A piece of solid tin is submerged in silver nitrate solution.

A metal surface becomes dull on exposure to air is a chemical change. A reaction occurs producing tin. It is still the same chemical H20.

Sugar dissolves in hot water - physical b. Still the same chemical just scratched up. A metal surface becomes dull on exposure to air.

Sugar burns in a pot. Correct Part D A metal surface becomes dull on exposure to air. A metal surface becomes dull on exposure to air.

A 56g sample of iron reacts with 24 8 of oxygen to form how many grams of iron 1 oxide. -ex a metal surface becomes dull on exposure to air -ex natural gas burning Physical Change -matter changes in appearance but not its composition -ex ice melts glass shatters -sugar dissolves -a metal surface becomes dull bc of continued abrasion Chemical Reaction -matter undergoes a chemical change when it undergoes a chemical reaction. A physical change is ice melting or breaking.

Still the same chemical just scratched up. A metal surface becomes dull because of continued abrasion. It is still the same chemical H20.

A physical change is ice melting or breaking. Also if a metal surface got scratched it is a physical change. Drag the appropriate items to their respective bins.

Sugar dissolves in water fter exposure to air for a long period of time. 355 cal to joules C 57x 10 to kilojoules 7. A metal surface becomes dull on exposure to air is a chemical change.

The surface of some metals acquires a dull appearance when exposed to air for a long time because metals form a thin layer of oxides carbonates or sulphide on their surface by the slow action of various gases present in air. Sugar burns in a pot. Copper turns green upon continued exposure to air because it reacts with gases in air to form new compounds.

1 on a question Physical or chemical change. Still the same chemical just scratched up. Water vapor is the only product Express your answer using two significant figures.

A metal surface becomes dull on exposure to air. But the metal surface reacting to to the air is a chemical change. A metal surface becomes dull on exposure to air-chemical Correct Answer.

Solved A 45 6 J To Calories B 355 Cal To Joules C 43 8 Kj Chegg Com

Solved Classify Each Change As Physical Or Chemical A Sugar Burns When Heated On A Skillet B Sugar Dissolves In Water C A Platinum Ring Becomes Dull Because Of Continued Abrasion D A

Solved Classifying Matter 1 Classify Each Mixture As Chegg Com