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MEA Naming components of the scientific method In the table below you will find three descriptions of sclentists engaging in activities that are part of the sclentific method. What are the missing words? description missing word? 5 ? After studying the chemical reactions of many compounds made of carbon, August discovers a chemical bonds to other atoms when it forms a compound. that says carbon always forms 4 about the arrangement of elements in the Wolfgang develops a Periodic Table, based on some ideas about how electrons are arranged in the different atoms of different elements. Using equations he develops, he is able to predict the exact arrangement of electrons in many atoms, and from there predict why they are where they are in the Periodic Table. Antoine burns some charcoal, and a very small diamond (!), and makes that the only product of both reactions is a heavy gas the (carbon dioxide). Explanation Check 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy C…

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What you need is in the picture the chart is in there two but you might have to zoom in to see it Thank You

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Protons, neutrons, and electrons... Oh My! Chemistry seems to trouble the non-science major. Bottom line, it is all about relationships! In this post, you apply critical thinking skills to demonstrate what you've learned about concepts in chemistry, by applying a concept to a real-life situation. This exercise will build your critical thinking skills as well as your creativity. Choose a major concept in chemistry from the notes, define it, and then give an example of how it is applied in real life.

In the table below, there are descriptions of an experiment on samples of three different chemical elements. Decide whether the element is a metal or nonmetal, if you can. If there is not enough information to decide, choose can't decide in the third column. element description metal or nonmetal? ? Element 1 is a moderately soft silvery-gray solid. A 5 cm x 5 cm square of it, only 1 mm thick, is twisted using two pairs of pliers. The sheet breaks in the middle. The freshly broken edges are lighter colored than the surface. metal 1 nonmetal (can't decide) Element 2 is a shiny silvery-gray solid. A 10. g cube of it is set on a hot plate. After 10 minutes, the temperature of the top of the cube has risen by less than 1 °C. metal 2 nonmetal (can't decide) Element 3 is a hard silvery-gray solid. Wires are fastened to each side of a 2 cm slab of it, and an ordinary household 9 V battery is hooked up so that it can feed electricity through the slab to an LED. The LED glows brightly. metal…

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Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get a magnified view. Be sure you check all the boxes on the right-hand side that are correct for this substance. Note for advanced students: in some sketches the distance between particles has been exaggerated to make it easier to see each individual particle. classification substance (check all that apply) normal 1000X 10,000,000X Ogas liquid Osolid lelement |compound Omixture Osolution Opure substance Ohomogeneous mixture Oheterogeneous mixture

Upload a drawing that shows what you think the structure of hydrogen atoms looks like. (Please don't look up, use what you already know.) Be sure to label relevant subatomic particles. Explain your drawing on the same page, providing other information to help us make sense of your representation of the hydrogen atom. No files uploaded

Recognizing the intersection of scientific properties and ideas with the world around you is a key component of this course. By choosing a specific element to discuss, you will begin to understand how all substances are composed of elements that work together to form the world around us. Using the periodic table in Chapter 8 of your textbook, pick your favorite element. Describe this element's properties (i.e. atomic weight, atomic number, metal/non-metal, etc.). In addition to using your textbook, use reliable internet sources to research an interesting fact about this element. Use all of this information to explain why this is your favorite element. Cite your source(s) in APA format.

Element Compound Molecule Density Precision Accuracy Choose at least 2 terms from the list, and answer the following questions for each term:  What familiarity and prior knowledge do you have about the term? What does the term mean in everyday language to everyday people? Use examples to help describe your thoughts. How do people use the word? What does the term mean in technical language to chemists? How is the term related to the course student learning outcome: Explain matter at the microscopic level? What are the similarities and differences between the everyday and technical meanings and uses of the term? What impact might the similarities and differences have on your learning of chemistry concepts in this course?

O east.cengagenow.com heral Chemistry I X OWLV2 | Online teaching and learning resource from Cengage Lear [References] Use the References to access important values if needed Which of the following statements is INCORRECT? Germanium is classified as a metal. Lead is classified as a metal. Tin is classified as a metal. O Silicon is classified as a metalloid. O Carbon is classified as a nonmetal. Submit Answer Try Another Version 5 item attempts remaining

2A Choose an 2B item. Choose an Choose an 20 item. item. Choose an Choose an 2D Choose an item. item. item. v. Complete the predicted observations using 'bubbles', 'no rxn' or the name of the ppt: sodium carbonate + nitric acid – we expect to see Click or tap here to enter text. barium nitrate + nitric acid - we expect to see Click or tap here to enter text. sodium sulfate + barium nitrate – we expect to see Click or tap here to enter text. sodium sulfate + nitric acid - we expect to see Click or tap here to enter text. sodium sulfate + sodium carbonate - we expect to see Click or tap here to enter text. barium nitrate + sodium carbonate- we expect to see Click or tap here to enter text. vi. Choose A, B, C or D to identify the solution in each bottle. barium nitrate nitric acid sodium sulfate sodium carbonate Choose an item. Choose an item. Choose an item. Choose an item.

-23 An oxygen atom has a mass of 2.66 x 10 g and a glass of water has a mass of 0.050 kg. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of oxygen atoms? Round your answer to 3 significant digits. How many moles of oxygen atoms have a mass equal to the mass of a glass of water? Round your answer to 2 significant digits. 0

Analytical chemistry studies and uses instruments and methods used to separate, identify, and quantify matter. What analytical technique could one use to determine whether the creatine is in the form of the monohydrate or dihydrate or something in between?Hint: Answer is not elemental analysis, but is a method used in lab in general chemistry.

The maximum level that the EPA considers safe for lead air pollution is 1.5 micrograms per cubic meter.  If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs?  Assume a total lung volume of 5.30 L. I got the correct numerical answer, but my power of ten was off.  I would appreciate if you highlighted the powers of ten throughout the calculation.

Please use this word bank to fill in the blanks of the first 5 questions. Atom 1. S is a/an 2. Sg is a/an (Yes! You can use more than one per blank spot!) element molecule Homogenous mixture 3. MgSO4 is a/an 4. A sample of filtered seawater containing Li+, Na+, K+, SO42, NO3¹, and Cl is a/an 5. A grey sample of basalt riddled with golden cubes of pyrite (FeS₂) is a/an 6. What is the state of S8 (s) at room temperature? compound Heterogeneous mixture 7. Give the full atomic symbol of S. 8. Give the subatomic particles of S.

Science Grade 5 Unit 4 2021 [23 Items] V Gordon, Terrell All Items 5. 6 P N> 4 8 9 10 11-20 Save Review Summary Exit Testing 5. A student tests an unknown substance that she believes to be a metal. Which of the following observations would indicate that the unknown substance is a metal? A.O It can break easily and is very brittle. B.O It can easily float in water. C. It is brown and dull. D. It is a good conductor of electricity. Time Remaining: 00:53:39 Copyright 2021 Illuminate Education, Inc. All Rights Reserved

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Upload a drawing that shows what you think the structure of hydrogen atoms looks like. (Please don't look up, use what you already know.) Be sure to label relevant subatomic particles. Explain your drawing on the same page, providing other information to help us make sense of your representation of the hydrogen atom. Please select file(s) Select file(s)

Please answer this follower question in your own words: 1) How do we know that air is not a single substance? 2) Metals have many similar properties, but not all properties are shared by all metals. Why is it useful to group them as metals? 3) Why is it important that the Periodic Table is structured as a table, rather than a list of elements? How is the Periodic Table important for all of science and not just chemistry? 4) Could the Periodic Table be arranged differently? How would you arrange the Periodic Table and Why?

Chemistry is the study of matter and how it changes, and matter is composed of atoms and molecules. How do the interactions between molecules and atoms affect the properties (both chemical and physical) of various substances? Use 3 example problems from 3 different chapters, worked out with correct answers, to support your position.

- 23 An oxygen atom has a mass of 2.66 × 10 g and a glass of water has a mass of 0.050 kg. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of oxygen atoms? Round your answer to 3 significant digits. How many moles of oxygen atoms have a mass equal to the mass of a glass of water? Round your answer to 2 significant digits. 0 g x10 X

One of the big problems in chemistry is our dependence upon our five senses (macroscopic observations) to infer what occurs on the atomic and molecular level (microscopic behavior of matter).  Give two examples of observations we can make on the macroscopic level that prove to us that atoms and molecules are in motion.

Please answer 10 Part A