Styrofoam - Study guides, Class notes & Summaries

CEM 142 First Exam Latest Update Already Passed Define and give examples of open, closed and isolated systems Open system-both matter and energy can enter or leave (beaker without a lid, pour your hot drink into a mug) Closed system- the amount of matter is constant and only energy can enter or leave (cup of coffee with a lid on it) Isolated systems- neither energy nor matter would move between the system and the surroundings (Styrofoam coffee cup with a lid on) Explain the dif...

PHSC 102 Exam 2 Questions with Correct Answers mass - Answer-amount of material (stuff) volume - Answer-amount of space what is true about comparing 1kg of sand and 1kg of styrofoam? - Answer-the sand and the styrofoam have equal masses but the styrofoam has a greater volume than the sand what is true about comparing 1 litter of air and 1 litter of water? - Answer-the water has a greater mass than the air but the air and water have equal volume common units for mass - Answer-gram (...

MMET 281 Exam 2 Questions and Answers Graded A+ Why is there a delay in the extrusion process at the very beginning? Back pressure resists the extruded part from exiting the die Define back pressure. A resistance or force opposing the desired flow of fluid Define Expanded Materials. Materials containing pores True or False: Cellular materials come in closed and open cell forms. True Describe the structure of the cells in a closed cell material. Cells are discrete and separate ...

HOW IS EXTRUSION DEFINED? There are several definitions for food extrusion, one of them is: Extrusion is a heat treatment process of the H.T.S.T high-temperature short time), which through a combination of heat, moisture, and mechanical work, modifies profoundly the raw materials, providing new shapes and structures with different functional and nutritional characteristics. What are the main applications of the extrusion process? 3 WHAT ARE THE MAIN APPLICATIONS OF THE EXTRUSION PROCE...

A 6th grade teacher is designing a unit on the study of the solar system. She has provided a number of options for students to demonstrate mastery of the physical relationship of each of the planets and their moons to the sun. Which of the following methods would be considered the most appropriate option for a student identified as gifted? (a) Using a technology application that allows the student to develop a virtual model of the solar system with a student narration of the qualities of each...

NH4Cl is being dissolved in water and this process is being studied in a styrofoam coffee cup with NO lid and the heat absorbed is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. Answer: 1. NO lid = open system 2. Heat absorbed = Endothermic process Question 2 Not yet graded / 10 pts You may find the following resources helpful: Scientific Calculator Periodic Table Equation Table Links to an ext...

Click this link to access the Periodic Table. This may be helpful throughout the exam. A reaction between HCl and NaOH is being studied in a styrofoam coffee cup with NO lid and the heat given off is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. 1. The type of thermochemical process 2. The amount of heat released in the reaction of HCl with NaOH 1. Heat given off = Exothermic process 2. ...

Praxis 5017 - Art, Music & PE Latest Update Graded A+ Primary Colors Red, Yellow, Blue Secondary Colors Green, Orange and Violet Tertiary Colors Colors that fall between primary and secondary colors Compound Colors Contain a mixture of the three primary colors Complimentary Colors lie opposite each other on the color wheel. Saturated Colors lie around the outside of the color wheel Shape Positive shape is the shape made ... Negative shape is the rest of the page left over...

PDD Final Exam 2 Questions & Answers 100% CORRECT 2024/2025 Why would you fill a hollow CMU? - ANSWERSGrout: easy-flowing cementitious material poured into a CMU wall from the cavity openings in the top every four feet as the wall goes up. Used for compressive strength, horizontal rebar and vertical rebar added for tensile strength. Used for load-bearing walls (including those that resist seismic). See here to learn more Hollow: CMU cells with air are better insulators than grout-filled,...

PDD Exam Sec 1 Questions & Answers 2024/2025 Does duct lining quiet a duct? - ANSWERSInternal duct lining quiets fan noise moving through ductwork a LOT (but has air quality concerns from (1) mold growing in the fibrous dark liner and (2) particulates from the fibrous lining fibers blowing loose and swirling around the room and in your lungs) External duct lining fails to quiet a duct Flexible duct: If the last 3 to 12 feet of a duct run is swapped for flexible duct (which also allows tol...