The electronics industry manufactures semiconductor chips from silicon. Refer to the periodic table and predict an element that may substitute for silicon. Express your answer as a chemical symbol.

Q: Write all possible chemical formulas for a substance that are consistent with the description…

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Q: Which of the following is NOT one of the elements important for life? (MARK ALL THAT APPLY) oxygen…

A: The six element necessary to all loving organism is Carbon , Hydrogen , Nitrogen, Oxygen,…

Q: Which of the following exists in nature as a diatomic molecular element?  Group of answer choices…

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Q: Which one of the following elements is a poor conductor of heat and electricity? iron lead fluorine…

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Q: lead + oxygen → ……………………………...……oxide

A: Lead + Oxygen → ______________________oxide

Q: B. Match each diagram with its correct description. Diagrams can only be used once. A В 1. Pure…

A: Elements consist of only one kind of atoms. For example, copper is an element and it is made up of…

Q: sodium and nitrogen Express your answers as ions and chemical formula separated by a commas

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Q: Iodine and iodine Copper and sulfur Hydrogen and fluorine Carbon and oxygen

A: Given:   4.0 1.7                                                0.4…

Q: What are the chemical formulas and names for the following compounds:  a. table salt b. Epsom salt…

A: a) Table salt: The chemical name is Sodium Chloride. Chemical formula : NaCl b) Epsom salt:  The…

Q: Which elements would be found in the alkaline earth metals family? [Select all that apply] O cesium…

A: Alkaline earth metals are six chemical elements in group 2 of the periodic table .These element are…

Q: Who designed the periodic table?

A: Periodic table is invented to arrange various elements so that one can get a clear and easy idea of…

Q: Element Compound Molecule Density Precision Accuracy

A: In this question, we have to tell that what is the importance of the terms of chemistry given to us…

Q: QUESTION 27 Which of the following elements is NOT a metal? O Indium, In O Iridium, Ir O Lithium, Li…

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Q: Write a complete chemical formula, including physical state symbol, for each element listed below in…

A: Each and every element has different chemical symbols or formula, which specific for them but…

Q: What is the chemical formula for potassium permanganate? Express your answer as a chemical formula.

A: Potassium permanganate is an inorganic solid crystalline compound. The color of Potassium…

Q: Describe ONE eveyday product that contains copper that you use everyday and why copper is such an…

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Q: Name a minimum of five elemental materials, some personal and some around your house, that you make…

A: Five elements that are not chemically changed from their natural states through regular uses are-…

Q: Which of the following is a mixture? Group of answer choices cough syrup steam helium potassium…

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Q: For each of the following pairs of compounds, describe a simple chemical or physical test to…

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Q: Na+ and Se2− Express your answer as a chemical formula.

A: Sodium is having positive charge and selenium is having negative charge. Sodium is cation whereas…

Q: Give the formula and charge of each of  the following cations: magnesium, zinc, iron(ili),…

A: Elements or molecules which loses its valence electrons are able to form a cation which is a +vely…

Q: The human body is primarily composed of which element?

A: The human body mainly composed of six elements named as oxygen (65%), carbon (18.5%), hydrogen…

Q: Choose the letters that apply: Which of the following connotes FAR from the real forms or existence…

A: Which of the following connotes FAR from the real forms or existence of substances?  a. molecular…

Q: Choose the letter/s that applies: Which of the following connotes FAR from the real forms or…

A: An element is a substance which consists of only one type of an atom that is transformed into a new…

Q: Express your answer as a chemical symbol or an ion

A: Number of protons= 7 Number of neutron = 8 So mass number = 7+8=15. Atomic number = 7  So ,the…

Q: A. TRUE OR FALSE. Write T before each number if the statement is correct statement is incorrect. anu…

A: Note : As per our guidelines ,we are supposed to answer only first question (Section A) ,Kindly…

Q: Its a naswer. plase type it i cant read handwritten

A: Answer

Q: Metals and non metals

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Q: In the table below, there are descriptions of an experiment on samples of three different chemical…

A: Properties of metal  •  Lustrous  • High melting point and boiling point.  • Malleable - They can be…

Q: What are the chemical symbols of the following elements: lithium, sodium, silicon, nitrogen,…

A: To find: The chemical symbols of given elements

Q: explain how the development of the Atomic Theory illustrates the Nature of Science. Support your…

A: It is asked to explain the development of atomic theory illustrating the nature of Science.

Q: TRUE for non-metal elements? Non-metals do not conduct electricity well Non-metals are represented…

A: Yes non metals do not conduct the electricity well as because they do not have/posses free electrons…

Q: A new transition metal, bartium, has been discovered, which is represented by the chemical symbol…

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Q: Which of the following substances meets the definition of a pure "compound" according to the…

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Q: shape represents a type of particle (such as an atom or a molecule). Classify mixture, or…

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Q: Express your answer as a chemical symbol or an ion.

A: Atoms consists of subatomic particles i.e. protons, electrons and neutrons

Q: History of Cosmetics

A: In this question we have to explain that the historical timeline about the development of cosmetics…

Q: Helium is a noble gas that does not like to make compounds. As it is a lightweight gas, any Helium…

A: Helium has the symbol He and atomic number 2 as a radioactive element. Helium. The first of the…

Q: Use the periodic table to give the name and symbol for each of the following elements:(a) the noble…

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Q: Here are the common abbreviation of compounds found in commercial products and the laboratory. Find…

A: 1) MSG (added in food to give an umami flavor) - Name - monosodium glutamate. Chemical Formula -…

Q: atomic element

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Q: Name a minimum of five elemental materials, some personal and some around your house, that you make…

A: Many metals and non-metals are used in our everyday life.

Q: Question 36 Which of the following gases is monatomic? O Okygen O Nitrogen O Argon O Hvdrogen O…

A: Since you have asked multiple type questions, we will solve only first  questions for you. If you…

Q: Classify each of the following as a METALor a NONMETAL: Sulfur 1. Metal Calcium 2. Nonmetal Lithium

A: Metals are those elements which have tendency to loose electrons while non metals have tendency to…

Q: Determine the elements that exist as diatomic molecules by writing check on the box beside the…

A: Determine which element that exist as diatomic molecules ?

Q: Which of the following are physical properties of elements within Group 2 of the periodic table?…

A: The elements Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium…

Q: Which of the following elements is diatomic? Magnesium, Hydrogen, Calcium, Bromine, Iodine,…

A: Pure elements that form molecule consisting of two atoms bonded together are know as diatomic…

Q: Select ALL of the metals listed below. hydrogen (H) O calcium (Ca) O gold (Au) O silicon (Si) iodine…

A: Given that,

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.