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Why does the chalk crumble slightly on strong heating?
Chalk is composed of calcite which is calcium carbonate. When CaCO3 is heated the carbon dioxide from its structure escapes thus breaking its well formed structure which breaks and the chalk crumbles.
What metal forms a black oxide when heated?
copperCopper (cupric) oxide is produced. Therefore, copper is the metal that produces a black oxide when heated.
Chemical equation to make iron phosphate?
Iron heated with lime water produces iron phosphate
Reaction for heated CuCO3 and a wooden splint?
The CuCO3 produces CO2 when it is heated, so the wooden splint will go out since the carbon dioxide would inhibit the oxygen from allowing the splint to stay lit.
When heated to decomposition calcium chloride produces chlorine gas is it physical or chemical?
Chemical change. Bonds are being broken.
Why do chalk give out bubbles when you put in water?
It produces Carbon di oxide which makes bubbles. Also chalk when it's made, has many vacuum in it.
Which elements give off a color when heated and what color?
Different elements produce different colors when heated. Here are a few examples: Lithium produces a red flame Sodium produces a yellow flame Copper produces a blue-green flame Potassium produces a lilac flame Barium produces a pale green flame
Why does the chalk crumble slightly on strong heating?
Chalk is composed of calcite which is calcium carbonate. When CaCO3 is heated the carbon dioxide from its structure escapes thus breaking its well formed structure which breaks and the chalk crumbles.
What does hot water do when it is heated so much that it produces bubbles of steam?
Then it is boiling
Why does a saturated salt dissolve when heated?
acid is a substance that produces hydronium ions when it is dissolved in water, and a base is one that produces hydroxide ions
What is the equation for the decomposition of lead II nitrate?
2Pb(NO3)2---> 2PbO + 4NO2 + O2 2Pb(NO3)2 when heated produces 2PbO+NO2+O2 for the part that says "when heated produces" substitute it with an arrow and then you"ll have the equation
How do you get chalk out of chalky water?
Chalk is calcium carbonate, which is insoluble in water. Hence, it can easily be removed by filteration. Moreover, calcium carbonate has reverse solubility in water, i.e. its solubility reduces with increase in temperature. Thus, the solution may be heated and then filtered.
When heated each element produces a series of thin colored lines called?
Spectrum or spectra
What is a blue solid that produces a black solid when heated?
Either sodium carbonate or copper carbonate
What does nitrogen produce when it is heated?
It produces NO2 and NO3 with release of soot, ash and particulate matter.
What metal forms a black oxide when heated?
copperCopper (cupric) oxide is produced. Therefore, copper is the metal that produces a black oxide when heated.
Chemical equation to make iron phosphate?
Iron heated with lime water produces iron phosphate
