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) well, how do you know if something is solid or liquid? Now compare that to what is not solid or liquid, that is a gas.
2) correct
3) correct.
4) Gasses have volume, even if it is not definite. The also have mass.
5) Does air take up space? What is in the atmosphere?
6) No. Air is compressible (think of a tire pump, or a ballon).
1. Well you cant see a gas, but you can feel it.
5. Air does take up space but not in the same amount.
6. Since air has no definite shape or volume, it does not take up the same amount of space. Like there would be more air in a party balloon than in a 35 mL syringe.
Is all of this correct?
One is correct. The other two are almost there, they need rewording....on 5 do you mean the volume can vary with pressure and temp...on 6, do you mean that compressed gas has more mass than an equal weight of uncompressed gas, both of the same volume?
For number one I means that air can take up different amount of space. For example, there will be more amount of air in a small balloon than in a bigger balloon.
And for number 6, I meant something similar to 5.
why was the telscope made
1. To determine if something is a gas, you can consider its physical properties. Gases are characterized by their ability to fill the entire container they are placed in, their lack of definite shape or volume, and their tendency to expand when heated. If a substance demonstrates these properties, it can be identified as a gas.
2. Gas is indeed composed of molecules and atoms. Molecules are formed when two or more atoms are chemically bonded together. In the case of gases, these molecules or atoms are generally not strongly attracted to each other, allowing them to move freely and rapidly.
3. Your understanding of matter is correct. Matter is anything that has mass and occupies space (volume). Whether it is a solid, liquid, or gas, as long as it has these two properties, it is considered to be matter.
4. Yes, gas is a form of matter. Although gases do not have a definite shape or volume, they still possess mass and take up space. They consist of particles (atoms or molecules) that are in constant motion and have energetic interactions. Even though gases can expand or contract to fit different containers, they still meet the criteria of matter because they have mass and occupy space.
5. Yes, air takes up space. You can observe this by blowing up a balloon. As you inflate the balloon, it expands because the air inside is taking up space. Similarly, you can feel the resistance of air when you try to move your hand through it. These observations provide evidence that air does take up space.
6. No, air does not always take up the same amount of space. The volume of air can change depending on various factors such as temperature and pressure. When air is heated, it expands, and its volume increases. Conversely, when air is cooled, it contracts, and its volume decreases. So, the amount of space occupied by air can vary depending on its temperature and other conditions.