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Where did the substance that appeared at the bottom of the evaporating dish after it was heated come from?
Wiki User
∙ 9y ago
It is likely the substance was a salt such as sodium chloride or copper sulphate that was in solution. When the water evaporated it left the solid salts behind.
Wiki User
∙ 9y ago
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How do convention currents move?
Heated from the bottom, the warmer substance will slowly rise to the top while the cooler substance at the top falls to the bottom to be heated again. Look at a lava lamp. That is all about convection currents.
Can an evaporating basin be heated on a Bunsen burner?
Certainly! That's what they're designed for.
What type of substance is heated by radiation?
Any substance that absorbs the radiation is heated by it.
What is the difference between watch glass and evaporating dish?
So that the substance in the evaporation dish is fully protected with the glass! The evaporating dish is used to heat and evaporate liquids. This porcelain item resembles a shallow bowl with a spout. Evaporating dishes are traditionally used to evaporate solvent to concentrate a solution; however they can also be used to hold sand for a sand bath, as a small water bath, or as a drying dish (like a watch glass). If heated by a direct flame, it will often be placed on a clay triangle for support. Thank you for your time! peace.....
What is the name of the substance created when zinc is heated with sulphur?
The substance created when zinc is heated with sulphur is zinc sulfide.
What is the black substance on the bottom of the evaporating dish after it has been heated on a Bunsen burner?
What_is_the_black_substance_on_the_bottom_of_the_evaporating_dish_after_it_has_been_heated_on_a_bunsen_burner
How does evaporating separate soluble substances'?
The water is heated and vaporizes, but the substance dissolved in it can't evaporate and is left behind.
A sample of copper powder is heated in an evaporating dish using a Bunsen burner. If the mass of the powder in the evaporating dish increases after heating this indicates that?
the copper must have combined with another substance.
A sample of copper powder is heated in an evaporating dish using a Bunsen burner If the mass of the powder in the evaporating dish increases after heating this indicates that?
the copper must have combined with another substance.
Can an evaporating dish be heated on a hot plate?
The evaporating dish would not be harmed if it was heated on a hot plate, but it should be heated on a bunsen burner.
How do convention currents move?
Heated from the bottom, the warmer substance will slowly rise to the top while the cooler substance at the top falls to the bottom to be heated again. Look at a lava lamp. That is all about convection currents.
What type of substance is heated by radiation?
Any substance that absorbs the radiation is heated by it.
Can an evaporating basin be heated on a Bunsen burner?
Certainly! That's what they're designed for.
What is used to collecting and evaporating liquids with no heat?
some liquids can decompose when heated
Under what conditions does a substance change state?
It depends on the substance. Some melt when heated (ice), some evaporate under heat (water) and some become solid when chilled (water into ice). It would be called their melting point, the freezing point and the evaporating point.
How does the volume and density of a substance change when it is heated?
The volume of a substance increases when heated, causing a decrease in density.
As evaporating water enters into the atmosphere what happens?
Its molecules become heated.
