GED Science Practice Questions

GED Science Practice Questions An alpha particle is composed of two protons and _______ neutrons. - two (An alpha particle is also a helium nucleus.) 10 inches is equivalent to _____ cm. - 25.4 (1 inch is 2.54 cm) When a moving charged particle is placed in a magnetic field, its direction will _____. - change (The charge will feel a force, known as the Lorentz force, which will cause the particle to deviate.) A _______ bond is formed when atoms share electron pairs. - covalent Microtubules are found in a cell's _____. - cytoskeleton (Microtubules help maintain the cell's structure and are involved in many cellular processes.) Organic compounds always contain ____. - Carbon Vitamins B and C are ____ soluble vitamins. - water (These vitamins can be easily excreted through the urinary system.) The invisible, hypothetical matter that makes up most of the universe is known as ____ matter. - dark The Milky Way is classed as a ____ galaxy. - spiral 21% of the Earth's atmosphere is ____. - oxygen The transfer