_Lab 4 Document

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The Covid-19 pandemic has many experts commenting on the science associated with the virus - origins, vaccines, monoclonal antibodies, masks, social distancing.  It is important to consider what the experts say, but to also evaluate their statements.  We will start with the scientific method.  I want you to outline the scientific method from what you have been taught in previous classes.  You can list steps, parts, process, short descriptions, whatever.  If not taught in previous classes, then you will make your best guess about it.

What materials will the teacher and the students need to complete a lesson on mixing substances in a 5th grade classroom based on the below standard and learning objective? Standard Conduct an investigation to determine whether the mixing of two or more  substances results in new substances.  Learning Objective Given a variety of substances and safety equipment in a classroom setting, students will be able to conduct an experiment to mix two or more substances and observe the results. They will be able to correctly identify whether a new substance has been formed as a result of the mixing, based on observable changes such as color change, formation of a precipitate, or change in temperature, with at least 80% accuracy.

Below are 3 real life situations. Pick two (2) them and explain ALL the science involved in the scenario. This means describe things like what is happening to the gas/liquid/solid molecules or atoms, which principles or laws are at work, why what is happening is happening, and how you know.  At sea level, a pot of water will boil at 100 °C. Suppose you wanted to boil the same amount of water high in the Rocky Mountains. What do you expect the temperature will need to be (generally speaking)? Why?   A can of soda sits in a sunny spot on the window sill for several hours. It is then opened at the same time as a cold can of soda from the refrigerator. What happens and why?   Weather balloons do not float out into space. They reach an altitude of about 15 miles above the surface (3x the height of Mt Everest) and they burst. Why?

Write TRUE if the statement is accurate and FALSE if the statement is flawed._________ 1. A gas consists of a collection of small particles traveling in straight line motion and obeying Newton’s laws. _________ 2. The molecules in a gas occupy negligible volume._________ 3. Collisions between molecules are perfectly elastic (that is, no energy is gained or lost during the collision.) _________ 4. There are negligible, attractive, or repulsive forces between molecules._________ 5. The average kinetic energy of a molecule is constant

4- There are different types of materials used to design a car, and these materials determine the durability and sometimes the speed of the vehicle. A- Compare between the properties of aluminum (Al) and magnesium (Mg). Rank these two elements based on their durability and performance. As per your findings which is a better option to use in car making? Include the electronic configuration of each in your answer

You and your crush will be in the same classroom. Since both of you will be required to observe social distancing, you plan to catch his/her attention through perfume scent. Here are your options and the chemicals responsible for them: • Floral (geranyl acetate, MM=196) Woody (myrcene, MM=136) Mint (menthol, MM=156) Arrange them according to the time it would take for the scent to reach your crush upon applying on yourself. Mint Woody Floral V

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Bl pure substances, physically combined. Good examples of a solid mixture would be a salad or a bowl of trail mix. Solutions are mixtures too. A spoon full of sugar dissolved in water is an example of both a mixture and a solution. Because mixtures are physical combinations, they are easily separated. Here is a list of mixtures. Match the best method to separate the parts of each mixture. Boil the water. Collect the solid. ITEM BANK: Move to Top drag and drop answer here Dissolve salt in water. Pour through filter paper and collect the sand. Gravel and rocks drag and drop answer here Sand and gravel Remove iron filings with magnet. drag and drop answer here Sand and iron filings Sand and salt Use a screen to sift and separate the big pieces from smaller pieces. drag and drop answer here Sand and wood shavings drag and drop answer here Sugar water Pick out the bigger particles. drag and drop answer here Add water and float one type of particle. 53°F A O O a search 立

Explain your rationale for using the summative assessment (below) from the lesson plan on mixing substances in a 5th-grade classroom based on the below standard and learning objective, including how it aligns with the learning objective.  Summative Assessment  Summative: Components of the Lab Report Purpose: The student should clearly state the purpose of the experiment, which is to determine whether the mixing of two or more substances results in new substances. Procedure: The student should describe the steps they took to conduct the experiment. This includes the substances they chose to mix and the safety equipment they used. Observations: The student should record any observable changes that occurred when the substances were mixed. This could include a color change, the formation of a precipitate, or a change in temperature. Conclusion: The student should state whether a new substance was formed based on their observations. They should also reflect on their accuracy in…

Stephanie is standing atop a 13 ft ladder. The ladder is leaning against a vertical wall. The ladder starts sliding away from the wall at a rate of 3 ft/sec. How fast is the ladder sliding down the wall when the tip of the ladder is 5 ft high? 3 ft/sec 7.2 ft/sec 12 -7.2 ft/sec

The solvent moves 3 cm in about 10 minutes. Why shouldn't the experiment be stopped at that time instead of waiting 75 minutes for the solvent to move 10 cm? Question 3 options:   More time increases the concentration of mixture components.   More time allows for better separation of components in a mixture.   More time decreases the concentration of mixture components.   Instructors don't like students to be finishing their labs too quickly.

Identify basic procedures for dealing with laboratory accidents.

Concentrated sulphuric acid is used in this experiment to O help the crystal growth of acetylsalicylic acid speed up the reaction of aspirin synthesis increase the activation energy O avoid impurities getting trapped into the aspirin crystals P Type here to search

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Below is a chart that represents temperature data obtained when a sample of water (H2O) is heated for 16 minutes and changes from the liquid to gas phase.   Plot the data for the measurements given below. Being able to create graphs and interpret graphs is an integral part of any science course. You can use the graph paper included in this document, an Excel spreadsheet or your own graph paper. The time measurements are the x-axis coordinates. The temperature measurements are the y-axis coordinates. Space your axes in consecutive intervals such as units of 1, 5 or 10. Make sure to label your axes with the appropriate information, including the time and temperature units (minutes and °C).  Give the graph the title “Phase Change of Water”.

Which of the following is NOT a part of filtration systems? Filter paper Funnel Condenser

Please answer both questions?

FINAL Experiment 1- January 2021_-789644623 - Saved Layout Review View Table A friend of yours went panning for gold last weekend and found a nugget that appears to be gold. With your newfound scientific prowess, you set out to determine if it is really gold. Your tests show that the nugget has a mass of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to 8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend? acer

New employees at Avondale Industries’ unmanned systems production line in Denver, CO, participate in employee training under the direction of the training and development department, but the line managers conduct the actual training. During the last two trainings, the line managers cut the sessions short and explained that the employees would receive better training while working on the production line. The trainer responsible for the program understood the line managers’ viewpoint about developing skills used on the line but needed them to see that training should provide more than just developing those specific skills. Which of the follow statements best explains why training should provide a longer-term view than just teaching line workers the skills needed to perform satisfactorily in their current jobs?     Giving line workers expanded training helps them understand more than specific skills; it also helps them become more confident contributors.   Training with a…

Please answer in more than 6 sentences

Now it's time to create, analyze and interpret a Chemistry-based graph! Let's do this in steps. Data Measurement number Temperature (°C) Solubility (g NaCl/100 g water) 1 0.00 35.2 2 20.0 36.1 3 40.0 37.0 4 60.0 37.7 5 80.0 38.4 100.0 39.0 Let's assume that you just finished your first research laboratory experiment and you collected the data listed above. Pay close attention to the titles. Based on the titles listed answer and complete the following: a. What would be the title of the graph? b. What set of data would you place on the y-axis? This is your dependent variable-measurable variable whose value depends on the independent variable. c. What set of data would you place on the x-axis? This is your independent variable-measurable variable of which when changed, the value of the dependent variable changes. d. Based on the data listed above, use the following site to make a Line Graph of the data listed above and turn it in here. e. Give a detailed CER writing response to the…

A chemical engineer must report the average volume of a certain pollutant produced by the plants under her supervision. Here are the data she has been given by each plant: Oglala South Fork plant Macon 10 L volume of pollutant 2.742 L 5.13 L What average volume should the chemical engineer report? Be sure your answer has the correct number of significant digits. 29.0 L X

A group of students were asked to determine the time is took for a single drop of methanol (CHA) to evaporate. The table below represents the data collected. 315 seconds 323 seconds 302 seconds 332 seconds 341 seconds 321 seconds 304 seconds 351 seconds What is the percent difference for the data? O 15.1 seconds O 15 seconds O 15.1 % O 15 %

Why do you need to study chemistry? How is it applicable to your course which is Criminology? In ten (10) sentences.

8. A student made a series of measurements of Mg* concentration in drinking water giving the following values: 269 ppm, 215 ppm, 248 ppm, 242 ppm, 238 ppm, 259 ppm, 265 ppm What is the experimental (or calculated) Q value for this data set? Determine if any values should be rejected from this data set at the 90% confidence level.

how do i find the freezing point of this graph?