PHYSICAL SCIE MIDTERMS
Cards (65)
- Who proposed that elements are made of tiny indivisible particles called atoms?
- What law states that when a product is formed, elements always combine in a consistent whole-number ratio of mass regardless of the amount of the starting material?
- What law illustrates that if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers?
- What law states that mass is neither created nor destroyed during a chemical reaction and also states that the mass of the substances formed in a reaction is equal to the mass of the substances that reacted?
- Who proposed that electrons have a negative charge?
- What atomic model did J.J. Thomson proposed?
- What atomic model illustrated how the negatively charged electrons (plums) are mixed with smeared out positive charges (pudding)?
- Who concluded that the electrons are located outside of the nucleus?
- Who concluded from his gold foil experiment that the nucleus is a very dense, very small, and positively charged and that an aton is mostly an empty space?
- Who proved the presence of neutral subatomic particles (neutrons)?
- Who concluded that the radiation consisted of neutral particles that are slightly heavier than protons and that these particles are found in the nucleus, together with the protons?
- What is Niels Bohr's atomic model called?
- What is Erwin Schrodinger's atomic model called?
- What do you call the tiniest particle of an element that retains the chemical properties of that element?
- ___ composes of protons and neutrons and is located at the center of an atom?
- What do you call the collective term for the two units: protons and neutrons?
- What do you call the emission of energetic particles of an atom and describes the ability of a material to undergo spontaneous emission of particles or radiation?
- What are the 3 rays that were produced by the radioactive decay of a material?
- What rays consists of positively charged particles (alpha particles) and are therefore deflected by a positively charged plate?
- What rays consists of high energy but does not have charge nor is affected by an external electric or magnetic field?
- What rays consists of high-energy electrons (beta particles) and are deflected by a negatively charged plate?
- ___ refers to atoms that have the same atomic number but different atomic masses and they are formed through nuclear reactions
- ___ mainly involves the nucleus of a particle, which consists of protons and neutrons
- ___ involves only the electrons that are found outside of the nucleus.
- What do you call charged atoms?
- What do you call a positively charged ion?
- What do you call a negatively charged ion?
- What are the Subatomic Particles of an Atom?
- ___ tells the number of protons and the number of electrons?
- ___ processes in which a nucleus either combines with another nucleus (through nuclear fusion) or splits into smaller nuclei (through nuclear fission)?
- Where are the Reactants written?
- Where are the Products written?
- What is the most widely accepted explanation to the origin of the universe?
- What do you call the process that creates new atomic nucleus from pre-existing nucleons?
- What do you call the process of involving nuclear through which fres atomic nuclei are synthesized from pre-existing nuclei or nucleons?
- What structure do stars develop when they evolve and produce new elements, the reactions involved happens in regions or layers?
- What do you call a massive explosion of a star?
- ___ elements heavier than iron are formed in a supernova
- What do you call a nuclear reaction in which an atomic nucleus and one or more neutrons collide and merge to form a heavier nucleus?
- What are the 2 types of Neutron Capture?