ou as teacher would like to revise the periodic table in a creative way with your learners in Grade 9. In Grade 8 you have already discussed the periodic table by using a periodic table as indicated below. You decided to use another teaching strategy for your revision. Indicate what teaching and learning resources you will use to revise the periodic table and explain your teaching activity that you will use to ensure that the learners understand this concept.

Q: The explosion of an atomic bomb releases many radioactive isotopes, including strontium-90.…

A: The position of the element strontium in the periodic table is marked in the diagram of the periodic…

Q: The formulas for the oxides of sodium, magnesium, aluminum, and silicon are, respectively, Na2O,…

A: The chemical formulas for each of the given compounds (metal oxides) are to be predicted based on…

Q: According to Coulomb’s law, what happens to the potential energy of two oppositely charged particles…

A: What happens to the potential energy of two oppositely charged particles as they get closer…

Q: Why did Mendeleev not include neon in his periodic table of 1871?

A: Mendeleev arranged the periodic table in the increasing order of their atomic weights. The elements…

Q: Describe the development of the Periodic Table?

A: Modern periodic table is made by Dmitri Mendeleev and Lothar Meyer. This modern period law states…

Q: What would be your reaction to a claim that a new element had been discovered, and it fit between…

A: Periodic table is a collection of chemical elements which are arranged by increasing atomic number.…

Q: How can rare earth elements cause water pollution?

A: In the periodic table, the rare earth elements are the elements present in the lanthanide series of…

Q: Answer each question in 5 to 10 sentences only.  1. Why are the groups in the periodic table…

A: In Periodic table , all the elements are classified as A block and B block elements. A block…

Q: Who designed the periodic table of the elements?

A: The detailed solution of your question given below-- Several scientists work in the periodic table…

Q: There is a small portion of the periodic table that you must know to do organic chemistry. Construct…

A: Concept introduction: Periodic table is a systematic arrangement of all the elements present in…

Q: Sulfur Chlorine What is the name of this atom? Argon Potassium

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Q: Define periodic table?

A: DISCUSSED BELOW :

Q: Based on their position in the periodic table, what ions do potassium andselenium tend to form?

A: To find: Based on their position in the periodic table, what ions do potassium and selenium tend to…

Q: Explain the contribution of Newlands’s law of octavesto the development of the modern periodic…

A: Periodic table is a tabular arrangement of  all the chemical elements present till date arranged in…

Q: What did Henry Moseley and Marie Curie contribute to the development of the periodic table

A: There was important contribution from Henry Moseley and Marie Curie.

Q: 3. Describe Rutherford’s gold foil experiment and the results of that experiment. How did these…

A: The Plum pudding model of an atom was proposed by J.J. Thomson. The Gold foil experiment was given…

Q: Provide a description of Rutherford’s gold foil experiment and the explanation for the results…

A: Rutherford's gold (Au) foil experiment:- Rutherford's experiment helps in understanding the atom in…

Q: A scientist needs to find an atom that will work well for her experiment on middle school students.…

A: Answer:- This question is answered by using the simple concept of reactivity and the stability of…

Q: What was the brilliance of Dimitri Mendeleev when discovering periodic law? What was so important…

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Q: A diagram of the periodic table of the elements is shown below. Periodic Table of the Elements In…

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Q: What is the periodic table

A: The elements are the simplest chemical species, which has same number of protons in the atomic…

Q: Part A Once you have filled in all the gaps on a separate sheet of paper, enter the four missing…

A:

Q: Four elements are named for planets in our solar system (including the ex-planet Pluto). Give their…

A: Since you have posted multiple questions, we are entitled to answer the first 3 only.

Q: potassium and sulfur Express your answers as ions and chemical formula separated by a commas.…

A:

Q: Answer the question below. Use the rubric in the materials for help if needed. Use details to…

A: Before the modern periodic table was set up, many people proposed the structure of periodic table.…

Q: 51. Pick an element in the periodic table from the inside front cover of this book. Use a search…

A: The element chosen is oxygen. It is discovered by Joseph Priestly in 1774. The name oxygen…

Q: Explain what is meant by the periodic table with an explanation of the divisions it consists of and…

A: Periodic table is the important tools in the history of chemistry . It arranged the atomic…

Q: Fig 12.1 represents a neutral lithium atom. All the particles in the atom are shown on the diagram.…

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Q: How did the study of the atom contribute to our understanding of the periodic table of the elements?…

A: The modern periodic table is organised on the basis of atomic number of elements. Atomic number is…

Q: How do you know that an element is a metalloid?

A: A metalloid is an element that has properties that are intermediate between those of metals and…

Q: Devise a system of chemical symbols that is easy to use by answering the questions below. Look up…

A: For writing chemical symbols one or two letters are used and first one is written in capital letter…

Q: Describe the contribution of the following scientist in the development of the periodic table -John…

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Q: (c) Using your knowledge of the HSAB theory, predict, with reasoning whether you would expect the…

A: According to HSAB principle : Hard acids tend to combine with hard bases and soft acids tend to…

Q: August 19, 2020's Google Doodle celebrated the 190th birthday of Lothar Meyer.  Write a single…

A: Lothar Meyer was a german chemist,who along with Dmitri Mendeleev,was instrumental in developing the…

Q: What is the formula of the compound in which the atom combining ratios are: phosphorus : nitrogen :…

A: In the given molecule three types of atoms are present, phosphorus, nitrogen, and bromine. The…

Q: look up dmitri mendeleev and find out how he constructed the original periodic table. present at…

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Q: Which pair of elements do you expect to be the most similar? a. Molybdenum and Tin b. Nitrogen and…

A: Given,  a. Molybdenum and Tin  Electronic configuration of Mo = [Kr]4d55s1  Electronic configuration…

Q: [Lab3] Elegdron dot Atonic Mumber Graphember panod umber) valerey) strecdure eriod 18 • Heo Lio 3. 3…

A: The electron dot structure or Lewis structure represents the bonding in a compound in terms of its…

Q: Introduction of the periodic table: Give a timeline outlining who contributed to the discovery of…

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Q: What is the reaction that corresponds to the first ionization energy of potassium, K? Express your…

A: • We need to write the reaction that corresponds to the first ionization energy of potassium.

Q: Give an example of an atom whose size is smaller than fluorine.

A: Atomic size of an atom is defined as the distance between valence shell of the atom and the nucleus…

Q: Is the periodic table useful to you as a student? Justify your answer. If vou were CE simn

A: Since the questions contains multiple questions, we will solve only first question for you. If you…

Q: Let's try this! Here are some tasks for you to accomplish for the completion of this lesson. You got…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Look up the density of silicon and of lead in a table online. Then look up the atomic radius of…

A: The densities of atoms depends on the number of protons in the nucleus. The number of protons is…

Q: Suppose that you face a problem similar to Mendelev: You must predict the properties of an element…

A: In the periodic table, the elements are arranged in order of their increasing atomic numbers. The…

Q: Horizontal rows of the periodic table are known as __________. Group of answer choices metalloids…

A: Horizontal rows of the periodic table are known as  Answer :- periods