yes because it is a nonmetal and you can see it and touch it so it does take up space.
Hydrogen is considered matter because it has mass and occupies space. Matter is anything that has mass and takes up space, and hydrogen satisfies both of these criteria.
it takes up space. sure it does
Yes it does take up space.
Is anything that takes up space
Yes. Most pictures take up about 1MB of space.
they don't take any space up
No, light does not take up physical space because it is made up of particles called photons that have no mass and do not occupy physical space.
A model that can be built to not take up a bunch of space, perhaps a pop up model. It would only take up a little space, yet could be quite elaborate.
Blowing up a balloon is essentially a measurement of air taking up space. The balloon does add slightly to the pressure (although the newer Mylar balloons often have less pressure). However, the space occupied by the balloon defines the space occupied by the air (or gas) inside. Helium or Hydrogen are lighter than air. They will still take up space in your balloon, but because they have a lower density than air, they cause the balloons to float. If you have a pressure chamber/vacuum chamber, you can cause the same amount of air to take up more space by lowering the outside pressure, or make it take up less space by increasing the pressure.
Minecraft does take up space on your computer, Like almost all games.
Hydrogen is stored in liquid form in a tank, at low temperature. It would not be practical to store it as a gas, since it would take up too much space, or if sufficiently compressed, would have an excessively high pressure.
There is nothing toxic about hydrogen or helium and there is no reaction that occurs between them. However, like all gasses they take up space and so can displace oxygen from an area. A lack of oxygen can kill a person in minutes.