Why can some mixtures be separated by chromatography? Chromatography can be used to separate mixtures of coloured compounds . As the solvent soaks up the paper, it carries the mixtures with it. Different components of the mixture will move at different rates. This separates the mixture out. How many main ways are there to separate […]
Which 5 SI units are commonly used in chemistry?
Which 5 SI units are commonly used in chemistry? The five SI base units commonly used by chemists are the meter, the kilogram, the kelvin, the second, and the mole. What metric units are commonly used to measure length, volume, mass, temperature and energy? In SI, the basic unit of length is the meter (m). […]
Who is the father of modern science?
Who is the father of modern science? Galileo Galilei Who was the first woman chemist? When it comes to the topic of women in science, Marie Curie usually dominates the conversation. After all, she discovered two elements, was the first women to win a Nobel Prize, in 1903, and was the first person to win […]
What are the major features of introspection?
What are the major features of introspection? Introspection is closely related to human self-reflection and self-discovery and is contrasted with external observation. Introspection generally provides a privileged access to one’s own mental states, not mediated by other sources of knowledge, so that individual experience of the mind is unique. Why is introspection unreliable? Psychological research […]
What are the three fundamental particles?
What are the three fundamental particles? All three types of fundamental particles—leptons, quarks, and bosons—are described below. The following Figure below shows the variety of particles of each type. How many types of fundamental particles are there? two types What are the fundamental particles in the universe? Particles currently thought to be elementary include the […]
Can a vector has infinite components?
Can a vector has infinite components? A vector can be split into infinite components (but only 3 orthogonal ones) Are vectors one dimensional? Yes. Not only are one dimensional vectors a thing, “zero dimensional” vectors are too! An example of a one dimensional vector would just be any real number, as you observed. How do […]
What is the effect of unbalanced forces?
What is the effect of unbalanced forces? An unbalanced force can change an object’s motion. An unbalanced force acting on a still object could make the object start moving. An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving. What would the resultant force on an […]
Why is the potential energy of a free particle zero?
Is atomic nucleus positive or negative?
Is atomic nucleus positive or negative? The nucleus (plural, nuclei) is a positively charged region at the center of the atom. It consists of two types of subatomic particles packed tightly together. The particles are protons, which have a positive electric charge, and neutrons, which are neutral in electric charge. Can nucleus be positive? The […]
What is the main characteristics of deciduous forests?
What is the main characteristics of deciduous forests? Deciduous forests have a long, warm growing season as one of four distinct seasons. There is abundant moisture. The soil typically is rich. The leaves dropped from trees provide a steady source of organic material for the soil. What are the characteristics of a deciduous tree? Most […]