Chemistry

exothermic reaction - Answer A reaction that releases energy in the form of heat endothermic reaction - Answer A reaction that ABSORBS energy in the form of heat enthalpy change - Answer the amount of energy absorbed or lost by a system as heat during a process at constant pressure...

Experiment 7: We examined 3 different types of polymerization 1. Condensation (interfacial polymerization) 2. Chain Addition 3. Cross-linked what did each accomplish? - Answer 1. Nylon-10,6 is made from sebacoyl chloride and hexamethylene diamine 2. Polystyrene is made from chain additon of styrene and the initiator as benzoyl peroxide which generates radicals with heat, these radicals react with the styrene to begin chain addition Experiment 7: Chain addition vs Condensation Polymerizat...

4 States of Matter - Answer solid, liquid, gas, plasma Physical Property - Answer a characteristic based on observations or measurements Chemical Property - Answer a characteristic based on how a substance interacts/reacts with another substance Definition: Melting Point - Answer temperature when a substance changes from a solid to a liquid Physical or Chemical: Melting Point - Answer physical property Definition: Boiling Point - Answer temperature when a substance changes from a liquid t...

acid rain - Answer Rain that has a non-metal dissolved in it. chemical property - Answer How a substance behaves in its chemical reactions. density - Answer The mass of a material in a certain volume. displace - Answer A more reactive metal displaces - or pushes out - a less reactive metal from its compound. displacement reaction - Answer In a displacement reaction, a more reactive metal displaces - or pushes out - a less reactive metal from its compound...

Element - Answer A pure substance made of only one kind of atom, cannot be broken down Compound - Answer A substance made of two or more elements that are chemically joined in a specific combination. Molecule - Answer Two or more atoms that are held together by chemical bonds and act as a unit. Organic compound - Answer Chemical compound that contains carbon atoms usually bonded to at least one hydrogen atom. Chemical formula - Answer A group of chemical symbols and numbers that represen...

What determines which energy gets absorbed? - Answer Chemical structure Louise de Broglie proposed that electrons had what properties? What experiment lead to this discovery? - Answer both wave and partical / the double slit experiment What is it called when electron waves collapses on itself? - Answer destructive interference What does the Heisenberg Uncertainty Principle state? - Answer it is imposible to know the exact momentum and position of an electron What describes the electrons l...

What appearance of an acidic analyte solution containing phenolphthalein indicates the endpoint of titration with a basic solution? Select one: A burst of pink color that darkens upon stirring. A persistent dark pink color throughout the solution. A burst of pink color that disappears upon stirring. A persistent pale pink color throughout the solution. - Answer a persistent pale pink color throughout the solution An indicator is a substance added to a sample that has (a visible, a physic...

In what phase are most elements found? - Answer Solid Examples of substances composed of only one element - Answer Iron nail (Fe) and Aluminum foil (Al) Elements found in sugar - Answer Carbon, hydrogen, oxygen Elements found in brass - Answer Copper and Zinc Element - Answer A simple substance that cannot be broken down into other substances How many known elements are there? - Answer 118 known elements Mercury - Answer An element that is a silver-colored liquid An element that is an in...

Pure Substance - Answer Matter with a fixed composition and made up of identical particles. Homogeneous Solution - Answer Made up of a uniform composition. Heterogeneous Mixture - Answer Non-uniform solution/mixture. Filtration - Answer Separation of solid and liquid solutions. Chromatography - Answer Separation of liquid-liquid solutions using their differences in polarity. Distillation - Answer Separation of liquid-liquid solutions based on differences in boiling points. Physical Chan...

Proton - Answer A subatomic particle that has a positive charge and that is found in the nucleus of an atom Neutron - Answer A subatomic particle that has no charge and that is found in the nucleus of an atom Electron - Answer A subatomic particle that has a negative charge and is found outside the nucleus in the electron cloud. Nucleus - Answer Center of an atom electron cloud - Answer area around the nucleus of an atom where the atom's electrons are most likely to be found energy lev...