Ciara Clark and Caroline Bedenbaugh 4A Density Lab Objective : The purpose of this lab is to observe and explore the relationship of a substance’s volume vs. its mass‚ and to calculate an object’s density by using the relationship of its mass and volume. Data Tables : Data: Density of Water Run Mass of graduated cylinder volume of water added mass of water 1 25.28 g 0.00 mL 0.00 g 2 26.15 g 1.00 mL 0.87 g 3 27.18 g 2.00 mL 1.90 g 4 28.19 g 3.00 mL 2.91 g 5 29.13 g 4.00 mL
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HRES 2170 Current Events Presentation Assignment & Marking Rubric Instructor – Peter Claghorn Team Member 1: __________________________ Presentation Date: _____________________ Team Member 2: __________________________ Team Member 3: __________________________ PLEASE NOTE: Presentations begin in class on September 25 – we will follow the roster posted on Bb and there will be no deferrals granted. If you need to change presentation
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Record responses in med blue bold font Student Exploration: Density Experiment: Slice and Dice Define Vocabulary Density: The degree of compactness of a substance Mass: A coherent‚ typically large body of matter with no definite shape Matter: The substance or substances of which any physical object consists or is composed Volume: The quantity of three-dimensional space occupied by a liquid‚ solid‚ or gas Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What do
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Finding Density Density is defined as mass per unit volume‚ which can be used to determine the object or substance observed. Many people use the density of objects to find what it is and how to classify the object. The object of the lab conducted was to find the density of the substances given and to find what the unknown liquid and solid were. The process to finding what the unknown solid and liquid were‚ was to find the density and to conduct multiple trials so when the density
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Density‚ Mass and Volume Density is the measure of how tightly the particles of a substance are packed into a given volume. L=1cm B=1cm H=1cm Aluminium=1cm3 Volume=lbh Volume= 1cm*1cm*1cm Volume= 1cm3 Iron 1cm3 1cm3 of iron would be however than 1 cm of aluminium. The density of the iron cube would be greater than the density of the aluminium cube. One explanation from that is that the particles/molecules in the iron cube are more tightly
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PHYSICS INTERNAL ASSESSMENT How to measure the density of water using graphical method? Name: Chia Yee Xin Candidate Number: Session: October 2014 School: Sri KDU International School Research Question: To measure the density of water using graphical method. Introduction: Water is the most abundant compound on the Earth and it covers about 70% of the Earth’s surface. Water is a transparent fluid which forms the world’s streams‚ lakes‚ oceans and rain‚ and is the major constituent of
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The purpose of this experiment was to determine the density of an object by measuring its mass and volume. Hypothesis When the rubber stopper is dropped into the overflow can‚ the volume displaced (mL) will be equal to the number of grams of the rubber stopper. I think this will be the outcome because I learned before that 1g=1ml‚ so for every gram dropped into the overflow can‚ 1 ml should be displaced (the volume). Therefore I think the density of each rubber stopper would be 1g/ml. Materials
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Questions: 1. Why is a conical flask‚ rather than a beaker‚ used in the experiment? – To allow easy mixing of solutions by swirling. 2. Why is the funnel removed from the burette after adding the acid solution? – so that the drops from the funnel will not fall into the burette. 3. In using a burette‚ why is it important to (a) rinse it with a little of the solution it is going to contain? – to remove any residual water and so avoid dilution of the acid solution when it is poured into the burette
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causes osteoporosis? In childhood‚ bones grow and repair very quickly‚ but this process slows as you get older. Bones stop growing in length between the ages of 16 and 18‚ but continue to increase in density until you are in your late 20s. From about the age of 35‚ you gradually lose bone density. This is a normal part of ageing‚ but for some people it can lead to osteoporosis and an increased risk of fractures. Other things that increase the risk of developing osteoporosis include: diseases of
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1.2 Exercise 2 - solutions Using molarities and concentrations 1. Calculate the number of moles of H2SO4 in 50 cm3 of a 0.50 moldm-3 solution. 2. Calculate the number of moles of FeSO4 in 25 cm3 of a 0.2 moldm-3 solution. 3. Calculate the mass of KMnO4 in 25 cm3 of a 0.02 moldm-3 solution. 4. Calculate the mass of Pb(NO3)2 in 30 cm3 of a 0.1 moldm-3 solution. 5. What is the molarity of 1.06g of H2SO4 in 250 cm3 of solution? 6. What is the molarity of 15.0 g of CuSO4.5H2O in 250 cm3 of solution
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