1. How do you know when something is gas?
2. What is gas made of? [I think it's molecules and atoms?]
3. How do you know when something is matter? [I believe that when something has a mass and volume..its matter. Is that correct?
4. Is gas matter? [This question got me confused because we were taught that gas is a form of matter, but it has no definite shape or volume so why is it matter?
5. Does air take up space? How do you know?
6. Does air always take up the same amount of space? [I think it's no but I don't know how to explain it.]
These are the questions from my worksheets that I mostly have troubles with and I need to be cleared up on it please. Thank you.
1. To determine if something is a gas, you can observe its physical properties. Gases have the ability to expand to fill the container they are in, they have no definite shape or volume, and they can flow and diffuse easily. For example, if you release a certain substance in a closed container and it spreads out to fill the entire space, it is most likely a gas.
2. Gas is indeed made up of molecules and atoms. In a gas, molecules and atoms are in constant motion and are not tightly bound to each other, allowing them to move freely. This makes gases highly compressible compared to solids and liquids.
3. Yes, your understanding is correct! When something has both mass and volume, it is considered matter. Matter can exist in three states: solid, liquid, and gas. So, if an object or substance has physical properties like mass and volume, it falls under the category of matter.
4. Gas is definitely a form of matter, despite not having a definite shape or volume. Matter can exist in different states, and gas is one of those states. In gases, the particles (atoms or molecules) are spread out and move rapidly, leading to their ability to take the shape of the container they are in. So, while gases don't have a fixed shape or volume, they still have mass and occupy space, which are defining characteristics of matter.
5. Yes, air takes up space. One way to know this is the fact that when you blow up a balloon, you are filling it with air. The air fills the space inside the balloon, causing it to expand. This expansion demonstrates that the air occupies space. Additionally, if you close a door or window, air cannot pass through it, indicating that air doesn't occupy the same space as solid objects.
6. No, air does not always take up the same amount of space. The volume of air can change based on various factors such as temperature, pressure, and the presence of other substances. For example, when air is heated, it expands and takes up more space. On the other hand, if air is compressed or cooled down, it contracts and takes up less space. Thus, the amount of space air occupies can vary depending on the conditions it is subjected to.