Yes, when wiping a chalkboard, you can inadvertently inhale some chalk particles that become airborne. Although the amount inhaled is typically minimal and not considered harmful to most people, it's always a good idea to practice good ventilation and wear a mask if you have respiratory issues or allergies.
Cat allergies can cause all sorts of symptoms, from sneezing to hives and rashes. They can also cause shortness of breath, which I'm assuming is what you mean. This is something to talk to your doctor about because untreated respiratory allergies can trigger asthma.
Nothing will happen when you add water to chalk, because chalk does not dissolve in water. However, if you are drawing with chalk, as the water evaporates, it will allow the chalk to spread and create more fun.
They will have fever.
When chalk is dissolved, the solid particles of chalk break down and disperse into the liquid it is dissolved in. This results in a homogeneous mixture where the chalk particles are spread out evenly throughout the liquid.
you first breath in and then you breath out
carbon dioxide is released into the air.
Yes. You breathe in dust, pollen and sometimes you get Allergies from them but you can definitely smell them.
When you crush chalk, the solid structure of the chalk breaks down into smaller particles. This results in a powder-like substance that is easier to spread and work with.
When you inhale, you breath in oxygen and your lungs get bigger.
Shortness of breath, coughing, sneezing and discoloration of your phlegm are some symptoms of allergies. You will usually feel as though you're slightly ill also.
then we could not breath.