What is the pH of NaCl? ≈7 Does NaCl increase pH? Does NaCl change pH? I said No, because NaCl is a neutral salt and doesn’t affect the pH. Today, I make an experiment and realized that when I prepare 1M NaCl solution in 25mM Sodium Phosphate buffer (pH=7.5), NaCl lowered (change) the pH from […]
How many amps are in 220 volts?
What is the attraction between particles in a solid?
What is the attraction between particles in a solid? Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place. Are solid particles in motion? Particles […]
What is it called when you study stars?
What is it called when you study stars? What is Astronomy? Astronomy is the study of everything in the universe beyond Earth’s atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars . How do scientists study space today? Astronomers study the […]
How do we use refraction in everyday life?
How do we use refraction in everyday life? Refraction of light can be seen in many places in our everyday life. It makes objects under a water surface appear closer than they really are. It is what optical lenses are based on, allowing for instruments such as glasses, cameras, binoculars, microscopes, and the human eye. […]
Why the nucleus is very dense?
What was the first plane to break sound barrier?
What was the first plane to break sound barrier? Bell X-1 Did Spitfire break sound barrier? A Spitfire very nearly broke the sound barrier in 1944. In the 1930s a small number of aero-engineers recognized that the piston-engine and propeller were providing diminishing returns. For the aircraft to go supersonic the whole propeller would have […]
What if there is two medians?
Why there is a need for scientific knowledge in education?
Why there is a need for scientific knowledge in education? Problem-solving and critical thinking are two of the most important skills students learn in school. In this way, science is one of the most important subjects students study, because it gives them the critical thinking skills they need in every subject. What is the impact […]
Is the bottom of the wave?
Is the bottom of the wave? The bottom of a wave is called the trough. The distance between two consecutive crests or two consecutive troughs is the wavelength. What happens when a deep water wave starts to feel the bottom? As a deep-water wave reaches shore, at the point where the depth of the water […]