How are isotopes of the same element different? Isotopes. An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different […]

Is radioactive decay exothermic? Atomic bombs make a distinctive mushroom-shaped cloud. Nuclear decay is also called radioactive decay, and it occurs in a series of sequential reactions until a stable nucleus is reached. Nuclear reactions release much more energy—orders of magnitude more—than exothermic chemical reactions. Is beta decay exothermic? The energy of beta decay is […]

Why do two isotopes of an element have the same atomic number but different mass numbers? Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). Isotopes of a given element contain different numbers of neutrons, […]

Which object will sink in fresh water which has a density of 1.0 g/cm three? Answer: all object having a mass volumic >1 kg/dm^3 will sink in water which has a mass volumic of 1kg/dm^3 . Is steel is more dense than lake water Why can a boat float? There are liquids of different densities […]

What effect do two electrons have on each other? Particles with the same charge repel each other, while oppositely charged particles attract each other. For example, a proton, which is positively charged, is attracted to electrons, which are negatively charged. However, if we put two electrons together or two protons together, they will repel one […]

Which invention has done the most to help predict storms? barometer When did they start tracking hurricanes? 1909 Which characteristic of this jet stream is most important in predicting weather patterns? Q. A high-speed wind, called a jet stream, is moving from the west to the east across the United States. Which characteristic of this […]

What are the two types of sedimentary rocks give uses of each? Uses of Sedimentary Rocks Limestone is used to make cement. Quartz is a type of sedimentary rock which is used to make glass. Rock gypsum is used to make plaster. Natural gas, oil, coal, and uranium, and other energy resources are formed in […]

Does pyruvate oxidation occur in the cytoplasm? Pyruvate is produced by glycolysis in the cytoplasm, but pyruvate oxidation takes place in the mitochondrial matrix (in eukaryotes). So, before the chemical reactions can begin, pyruvate must enter the mitochondrion, crossing its inner membrane and arriving at the matrix. How is pyruvate oxidation regulated? The pyruvate dehydrogenase […]

What is an example of a connection between Biosphere connecting to atmosphere? the atmosphere, which contains all of the planet’s air. These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). What is the interaction between the biosphere and hydrosphere? The […]

During which of the following phases of the moon do we see the left half of the Moon as lit? The answer is: Can be first quarter moon or third quarter moon. Explanation: At first quarter moon and at third quarter moon we can see exactly half of the moon lit up. But, it depends […]