Please design a simple experiment to prove the existence of air in the mineral water bottle

Put into the full basin, there are bubbles, prove that there is air

How to design experiments to prove air quality?

First, weigh the mass of a magnesium strip, ignite the magnesium strip in a closed bell, and open the bell to weigh the mass of the remaining solid. It is found that the mass increases, which proves that there is some substance in the air and it has mass

RELATED INFORMATIONS

1. [chemistry] design an experiment to prove that respiration produces carbon dioxide
2. In the article "carbon dioxide", green plants and carbon dioxide give out oxygen when they do (). Animals breathe in oxygen and exhale carbon dioxide. In this way, they keep ()
3. People and animals need to consume oxygen for breathing. Why can the volume fraction of oxygen in the air always maintain 21% 1. People and animals need to consume oxygen for breathing. Why can the volume fraction of oxygen in the air always maintain about 21%? 2. Can we draw a conclusion that nitrogen accounts for about 4 / 5 of the air from the burning experiment of red phosphorus in the bell jar? Why? 3. If there is water vapor in the air, will the content of water vapor change
4. When plants breathe at night, they should absorb oxygen and release carbon dioxide as usual, but will they also absorb a little carbon dioxide to breathe? When plants breathe at night, they should absorb oxygen and release carbon dioxide as usual But will it also absorb a little carbon dioxide to breathe?
5. Animals and plants can inhale oxygen and exhale carbon dioxide. What is the function of organisms Now!
6. Who is the source of oxygen in carbon dioxide produced by respiration Is it from oxygen
7. Students in a research study group used the following devices to explore the respiration of plants
8. In the experiment of studying the conditions of lever balance, we should balance the lever in the horizontal position first. What is the purpose of doing this?
9. What is the principle of light lever
10. How to explain the principle of balance with lever
11. The reason why the respiration of plants is not obvious under light is () A. Photosynthesis is strong, absorbing carbon dioxide B. respiration is not carried out under light C. photosynthesis inhibits respiration D. respiration is weakened under light
12. Why do you drop a drop of water on the slide for onion mounting in the first volume of the seventh grade of human education (what's the purpose of dropping water) but why do you drop normal saline when you do oral epithelium mounting? Why can't you drop water?
13. Is it related to the respiration of plants that "grain should be dried in the sun before entering the warehouse"?
14. The significance of plant respiration
15. (2008. The first mock exam in Nankai District) the plant has respiration, except for energy release. A. Starch and oxygen B. water and organics C. water and carbon dioxide D. water and inorganic salts
16. When doing the research experiment of plant respiration, the gas produced can be introduced into () to verify the carbon dioxide produced in respiration
17. Respiration of green plants (conditions, raw materials, products, places)
18. According to the respiratory response of plants, write the respiratory response of human body Hurry up,
19. Please design an experiment to measure the burning speed of mosquito repellent incense, and write down the required experimental equipment, experimental steps and physical quantities to be measured
20. 1. In order to compare the power of rope skipping in the class rope skipping competition, which physical quantities must be measured in the activity are as follows:___________ In order to compare the power of rope skipping in the class rope skipping competition, which physical quantities must be measured in the activity are as follows:______________________ ,___________________ ,_____________ The expression of power is_________ . 2. As shown in the figure, it takes 100 seconds for Xiao Ming to ride a bicycle 600 meters in front of a uniform speed on a straight road, from which the speed of the bicycle can be calculated___ Assuming that the resistance of the bicycle is 60N, the power of Xiaoming's work during the journey is______ w. The physical formula used to solve the problem is as follows_________________________________________ Try to deduce the expression of the relationship between power and speed_________________________________________