:Independent Activity 2. Elements of the Periodic Table :Directions: By using your periodic table, identify whether the following elements are metal : or nonmetal. Write your answers on the space provided before each number. 1. Magnesium 11. Potassium 2. Oxygen 12. Bromine 3. Calcium 13. Gold **... 4. Iron 14. Phosphorus ....5. Fluorine 6. Sulfur 15. Strontium 16. Titanium .......... 7. Aluminum 8. lodine 17. Lithium .............. 18. Chlorine ............. 9. Nickel 19. Lead .... 10.Nitrogen 20. Cobalt

Q: What is an element composed of?

A: An element is a pure material made up of atoms with the same number of protons in their atomic…

Q: Determine the mass of a sample

A: Given: The volume of the sample of chromium is 2.4 cm3.

Q: periodic

A: According to the question, we need to determine what does the letter 'A' represents in this periodic…

Q: An element has two isotopes. One isotope has a mass of 63.22g. The other has a mass of 67.88g. If…

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Q: If atoms have mostly empty space, so how does matter stay strong? please explain

A: The empty space in an atom is the space where the nucleus (proton+neutron) is absent.

Q: Which of the following statements is correct? A. All metals are shiny and can conduct electricity.…

A: Which of the following statement is correct ?  A. All metals are shiny and can conduct electricity.…

Q: (1) Either 2 + 2 is 0 or gold has atomic number 79; (2) 2 + 2 is not 0; thus, (3) gold has atomic…

A: The Good argument3)Gold has atomic number 79which is good argument1) & (2) are not good…

Q: Answer the following questions about Rare Earth Elements:     a. List the Lanthanide and Actinide…

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Q: [References] An element consists of 0.19% of an isotope with mass 135.907 u, 0.25% of an isotope…

A: Given : Mass of isotope 1 = 135.907 u  Abundance of isotope 1 = 0.19 % Mass of isotope 2 = 137.9060…

Q: Activity type of Alumina (meaning of type I, II, III, etc.) what do the numbers mean?

A: Alumina is a granular and extremely porous form of aluminum oxide. It is available in basic, acidic…

Q: 2/17/2021 Chapter 2 Concept Check on Atoms and Isotopes Chapter 2 Concept Check on Atoms and…

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Q: Elemental phosphorus is tetratomic. Why?

A: Phosphorous is a element with large atomic size.

Q: you are designing a rocket engine th uses a mixture of hydrazine and water as a propellant. this…

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Q: Summarize indicating Thomson major contribution to the atomic theory.

A: The atom is the smallest unit of particle that used in a chemical reaction.

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

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Q: Which group of elements has the most similar chemical properties?          A:uranium, plutonium, and…

A: We are given a group of elements. From these groups, we need to select that one that has the…

Q: A: Where on the periodic table, are the metals located?  B: Where on the periodic table, are the…

A: Periodic table is a table in which all of the elements are situated together. On left side there are…

Q: 6. What is electrical charge?

A: The definition of electric charge has to be given,

Q: The uranium atom is the heaviest of the common naturally occurring elements but uranium is not the…

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Q: Part A Na Na + Express your answer as a particle or a chemical formula. ΑΣφ ? OA chemical reaction…

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Q: atomic theorists

A: Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is…

Q: what are radioactive elements? Give examples

A: Radioactive elements:When an element is subjected to spontaneous degeneration of its nucleus…

Q: Atomic # for uranium is 92 how many protons, electrons, neutrons in isotope U- 96?

A: Given that, Atomic number of U is 92.

Q: 86. the symbol for the atomic number is Z the United States has the largest water footprint of…

A: Given:  Q 86 to 95 for True or False Q 96 to 100 for Matching

Q: Antimony (Sb), has two naturally occurring isotopes: Sb-121 that has a percent abundance of 57.30 %…

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Q: On a mission to a newly discovered planet, an astronaut finds gallium abundances of 60.11 % for 69Ga…

A: The mentioned atomic mass is the average atomic mass of gallium.  The equation for calculating the…

Q: 17. Write the atomic mass for Carbon to 3 significant figures.

A: Carbon is non metal  Carbon Symbol is C  Carbon atomic number  is 6  Carbon electronic configuration…

Q: ron 54 Chemistry/Cor cans used for canning food are usually coated with tin instead of zinc. This is…

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Q: Matter is defined as ....... إجابتك Felite is إجابتك

A: 2. The term matter refers to anything that occupies space and has mass—in other words, the “stuff”…

Q: Element X has an unstable nucleus due to an overabundance of neutrons. All are likely to occur…

A: Element X has an unstable nucleus due to an overabundance of neutrons. All are likely to occur…

Q: What is the chemical element? X

A: Here we have asked about the information for the chemical element 'X'. We can tell about this as…

Q: The element titanium is now being used as a structuralmaterial for bone and joint replacement…

A: Titanium belongs to group four. It is solid metal at room temperature with an electronic…

Q: When the elements are arranged in order of increasing mass, certain sets of properties recur…

A: In Dmitri Mendeleev and Lothar Meyer periodic table, the elements are arranged in order of…

Q: Here is a list of statements. Put a check mark for the accurate ones and the necessary corrections…

A: Matters are the particles which consists mass and volume. Matter is not able to be seen by naked…

Q: Complete the following by placing the missing words correctly. The atomic theory was given by + .…

A: Atomic theory is given by dalton.proton is a fundamental particle.

Q: graphical information (socioeconomic background, family, education), his inital research focus, and…

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Q: The vast majority of the ISM, both by volume and by mass, is made up of this element, found at many…

A: ISM means Interstellar medium. It consist of matter and radiation that exist between the spaces of…

Q: Describe cathode ray tube experiment and draw its diagram

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Q: Summarize the history of the atomic idea?

A: Greek philosophers. Leucippus and Democritus put forward the idea of atoms as far back as the fifth…

Q: - Sulfur - Nitrogen - Fosfor - Arsenic - Cr - Cu - Uranium - Zinc - Hg by exclude from the elements…

A: The biological pathway in which elements are transformed and moved through various states by…

Q: Magnesium reacts explosively with oxygen to form magnesium oxide. Which is NOT true of this…

A: The incorrect statement among the given has to be given,

Q: in

A: Zinc react with HCl to produce zinc chloride which is a precipitate hydrogen gas .The original…

Q: 12. Given the elements name and its mass

A: The isotopic symbol in addition to this also known as the nuclear notation allows a very simplistic…

Q: Imagine a new element (symbol X) has been found on Mars. Four isotopes of the element have been…

A: Average atomic mass of element X can be calculated by using the equation: Average atomic mass of X =…

Q: 11) Calculate the number of atoms of each element: 5Na,SO,

A: according to mole concept one mole of any species contains avagadro number of atoms,  molecule and…

Q: what are the properties of cathode rays and anode rays?

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Q: Question attached

A: We know that the density is defined as the mass occupied by the substance per unit volume Density =…

Q: In 1909, a team of British scientists led by Ernest Rutherford, carried out the Gold Foil Experiment…

A: Gold Foil Experiment helped to determine the arrangement of particles in the atom.

Q: The element belonging to group 15, period 3 is named

A:

Applications of Molecular Spectroscopy

When light sources pass through the diffraction grating then light splits into different wavelengths. The light source produces two types of patterns that are shown as destructive and non-destructive. The light source is in the form of quanta that is quantitation.