Which of the following noble gas is least Polarisable? Helium Why is argon a stable element? Nearly all of the argon in the Earth’s atmosphere is radiogenic argon-40, derived from the decay of potassium-40 in the Earth’s crust. The complete octet (eight electrons) in the outer atomic shell makes argon stable and resistant to bonding […]
Why is momentum not always conserved?
Why is momentum not always conserved? The total momentum of both objects does not change. For this reason we say that the total momentum of the interacting objects is conserved. Newton’s third law implies that the total momentum of a system of interacting objects not acted on by outside forces is conserved. Is angular momentum […]
Which of the following best describes a difference between artificial and natural selection?
Which of the following best describes a difference between artificial and natural selection? The following statement best describes the difference between artificial and natural selection: Natural selection acts without the input of humans: artificial selection requires human input. only via natural selection, genetic drift, migration, or mutation. Which best describes the role of mutations in […]
Does all water run through water heater?
Does all water run through water heater? The cold water service line slopes away from the water heater after splitting from the main line. Instead of sending water through the heater, cold water service lines run directly to every water appliance in the home. To get to every appliance, these pipes need to run throughout […]
How do you know if a spring is ideal?
How long does aluminum take to decompose?
How long does aluminum take to decompose? around 250 years Why you shouldn’t drink from a can? A common ingredient in plastic bottles, Bisphenol A (or, BPA) is one of the most potentially dangerous things about a soft drink. A study from the American Heart Association in 2014 revealed that BPA leaching from cans could […]
What is rapid combustion give an example?
What is rapid combustion give an example? Burning of LPG is an example of rapid combustion. In this combustion, the combustion of combustible material is complete. LPG burns rapidly and produces heat and light. What is meant by spontaneous combustion? Spontaneous combustion, the outbreak of fire without application of heat from an external source. Spontaneous […]
Where do most humans live?
Where do most humans live? The world’s two most populated countries, China and India, together constitute about 36% of the world’s population. Africa is the second most populated continent, with around 1.34 billion people, or 17% of the world’s population. How many years do human live? 79 years What country has the least population? Vatican City […]
What is chain drill?
What is chain drill? Chain drills are exercises that allow learners to practice dialogue, build vocabulary and develop clearly stated ideas about a familiar topic using repetition as the primary teaching strategy. 1. The learners build on the statements made by adjacent learners in the same way that links are added to a chain. What […]
How can matter be transferred?
How can matter be transferred? In ecosystems, matter and energy are transferred from one form to another. Matter refers to all of the living and nonliving things in that environment. Nutrients and living matter are passed from producers to consumers, then broken down by decomposers. Decomposers break down dead plant and animal matter. How energy […]