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Why are bubbles emitted when a chalk piece is immersed in water?
Wiki User
∙ 8y ago
Chalk is a porous material - this means there are microscopic holes in the substance, which water seeps into - expelling air as visible bubbles.
Wiki User
∙ 8y ago
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Why a piece of chalk emits bubbles when immersed in water?
2 reasons for this.. first ischalk is chemically calcium carbonate with formula CaCO3 when water, H2O is added, a reaction takes place:CaCO3 + H2O ----) H2CO3 + CaOH2CO3 ------) H2O + CO2Carbon-dioxide reacts with water resulting to Carbonic acid and Calcium carbonate or known as burnt lime. Carbonic acid will dissociate to water and Carbon dioxide, a gas that escapes out of the water causing the bubbles. The precipitate that settles at the bottom of the glass is Calcium oxide.second reason is..The chalk is a porous material.. and when it is immersed in water, water fills in the pours and air escapes in bubbles...
Why does a piece of chalk called a matter?
A piece of chalk is matter because it has mass and occupies space, which is the definition of matter.
What is the chemical reaction to make chalk?
Chalk contains calcium carbonate (CaCO3). Vinegar is acetic acid in water. If you spill vinegar on a piece of chalk, you will see carbon dioxide bubbles with some wetness and a salt called calcium acetate. 2 HC2H3O2 + CaCO3 -> Ca(C2H3O2)2 + CO2 + H2O
Why might a long piece of chalk measure 8 units and3 units?
Measure the lenth of a long piece of chalk the chalk is 8units long it was 3 units long explain why both measurements might be corret
What is more than one inch?
a piece of chalk
Why a piece of chalk emits bubbles when immersed in water?
2 reasons for this.. first ischalk is chemically calcium carbonate with formula CaCO3 when water, H2O is added, a reaction takes place:CaCO3 + H2O ----) H2CO3 + CaOH2CO3 ------) H2O + CO2Carbon-dioxide reacts with water resulting to Carbonic acid and Calcium carbonate or known as burnt lime. Carbonic acid will dissociate to water and Carbon dioxide, a gas that escapes out of the water causing the bubbles. The precipitate that settles at the bottom of the glass is Calcium oxide.second reason is..The chalk is a porous material.. and when it is immersed in water, water fills in the pours and air escapes in bubbles...
Why did pyro set a box of chalk on fire?
He wanted a piece of chalk lit
Can a rubber band a piece of chalk or a skirt be more easily broken?
A piece of chalk.
Is crushing a piece of chalk a chemical change or a physical change?
Crushing a piece of chalk is only a physical change. Chemically, it is still chalk.
Why does a piece of chalk called a matter?
A piece of chalk is matter because it has mass and occupies space, which is the definition of matter.
What volume of water would be needed to dissolve a piece of chalk having a mass of 7 grams?
what are the volume of piece of chalk
What is the best metric unit to use for a piece of chalk?
Centimetres and/or millimetres - depending on the size of the piece !
What do you get when you crush a piece of chalk?
When you crush a piece of chalk you get lots of small pieces of chalk.It is only a physical change. It is not a chemical change.
Why does a piece of chalk wear out as it is used on a blackboard?
With every stroke of the chalk piece it leaves some of the chalk on the board. This abrasion of the piece of chalk causes it to wear down. This is similar to why the rubber tyres of cars wear down when they are driven over a road surface.
How do you know if chalk contains calcium carbonate?
Through chemical analysis of a piece of chalk!
How long is a piece of chalk in millimeters?
It is a fraction of the length of a piece of string!
What mixture does mixing vinegar with crushed chalk make?
Mixing vinegar with crushed chalk doesn;t make anything. When you add crushed chalk to vinegar, it will disintigrate faster than when putting a whole piece of chalk in, because there is more surface area. When you add crushed chalk to the vinegar, it turned the vinegar yellow (it you're using yellow chalk), and there are lot's of bubbles and sizzling noises. it's a fun experiemtn! you should try it.
