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There are many chemical reagents which turn black while heating in air including lead sulfate.
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∙ 11y ago
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Is copper when it turns green in the air a chemical change?
Yes because the copper is changing into a new substance.
What metal goes black in the air?
copper,and some precious metals, when exposed to air, turn black, like silver(completely turns black when exposed to air),gold(black spots appear),and others,maybe platinum.
Why is air a pure substance?
Air is not a pure substance.
Why silver turns black on exposure to air?
Sulphur and Nitrogen dioxide and trioxide gases present in the air, as pollutants, react with the surface of the silver to form black compounds such as Silver nitrate and Silver sulphide.
A shiny brown coloured element X on heating in air becomes black compound Y Identify X and Y give examples?
It is copper. & the black compound is CuO.
What is the substance in the air that causes copper to turn black when in contact with fire?
The substance in the air is oxygen. Copper + oxygen= copper oxide.
Is copper when it turns green in the air a chemical change?
Yes because the copper is changing into a new substance.
When you peeled a banana and it turns black it is a?
it turns black because air is around it when u open a banana use airtight Ziploc i read this in a science from scientist
What metal goes black in the air?
copper,and some precious metals, when exposed to air, turn black, like silver(completely turns black when exposed to air),gold(black spots appear),and others,maybe platinum.
How is a thermostat a good example of a feedback system?
A thermostat senses the air temperature and turns on or off the switch that controls the heating or air conditioning system, according to the set-point.
How does a gas fire power station work?
i think it is used by the air heating into hot water and then that rises and turns the turbines which then drives the generators
What is the main reason water from the ocean turns to vapor and then evaporates into the air?
Two physical changes occur: evaporation by heating and condenstion by cooling.
What is the MAIN reason water from the oceans turns to water vapor and then evaporates into the air?
Two physical changes occur: evaporation by heating and condenstion by cooling.
Why is air a substance?
air is a substance because air is a gas and a gas is a substance.
Do air purifiers eliminate black mold?
No, they just purify the air. Black mould is caused by condensation. Its cold outdoors, but warm indoors with the central heating and stuff so that cause condensation and damp which leads to black mould.
Why does your copper wiring turn black?
Copper wiring turns black due to oxidation. It is the air reacting with the metal. Copper wiring also sometimes turns green.
What does Radium and oxygen make?
Oxygen (air) turns Radium black. Radium-Bromide makes air glow green like neon.
