The element silver has both physical and chemical properties, some of which do not change when the size of the sample changes. Which of these choices is a physical property that does not change when the size of the sample changes?

Q: 1. Dmitri Mendeleev was regarded as the Father of the Modern Periodic Table; did you think it is…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: the symbol of the halogen with the most electrons Express your answer as a chemical symbol. ΑΣφ ?

A:

Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: The left side of the reaction has one green element and two blue elements because they are of two…

Q: Give some examples of metals and nonmetals?

A: Some examples of metals and nonmetals have to be given below.

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.Choose the element symbol pair which is correctly matched: A.Cobalt Co B.Carbon Ca C.Chlorine Ch…

A: cobalt is correctly matched with Co and carbon is represented by c       chlorine by Cl      calcium…

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

A: Given that : We have to identify whether the elements are metal or non-metal form the given…

Q: Figure 3. Diatomic molecules of the element chlorine, Cl2. This Figure 4. Molecules of the compound…

A: ⇒All atoms are made up of tiny particles ie,protons,neutrons and electrons⇒A n element is a pure…

Q: Which of the following are poor conductors of heat and electricity? O Transition elements O Halogens…

A: Elements can be classified into 3 forms, that is metals, non-metals, and metalloids. Metals are the…

Q: Create a diagram to trace the development of the modern periodic table based on the observations on…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: can you take a look at two elements located into different corners of the Periodic Table - Lithium…

A: An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic…

Q: Which of the following physical properties do you think would help you determine whether the shiny…

A: There are many properties which can be used to determine whether the shiny nugget is gold or not .…

Q: D. Empty Volume Determination of Aluminum A sample of aluminum weighs 27.0 g and has a volume of…

A:

Q: Transition metals are good conductors of electricity because of their sea of electrons Oability to…

A: (1). Substances through which heat and electricity can easily pass are called conductors. For…

Q: C The radius of a nickel atom is 125 pm. How many nickel atoms would have to be laid side by side to…

A: We are given : radius of nickel atom (r) = 125 pm distance (d) = 1.11 mm number of nickel atoms (n)…

Q: Use triangles to represent atoms of element A and circles to represent atoms of element B. Draw an…

A:

Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: Where on the periodic table are the most nonmetallic elements found?

A: Elements that gains electrons and form their respective anion are known as non-metals.   Seventeen…

Q: An alloy contains 10.8 % titanium by mass and has a density of 13.98 g/cm3. Titanium-49 has an…

A: Number of atoms = 8,926,980,280,926,177,000,000 atoms. Avogadro’s constant = 6.023 × 1023 atoms.…

Q: Write any three differences between metals and non-metals on the basis of chemical properties?

A: Metals: Metals are the majority elements in the periodic table. They include transition metals,…

Q: 2. Water is made of two elements, hydrogen, and oxygen. What possible elements could substitute for…

A:

Q: Based on the following word descriptions,write the formula for each of the indicated substances.a. a…

A: A formula of any compound which represents number of the all types of atoms of that compounds…

Q: Which of the solids making up the mixture you are given is an ionic compound?

A: An atom is made up of electrons, which revolves around the center of an atom, protons, and neutrons.…

Q: The radius of a rhodium atom is 134 pm. How many rhodium atoms would have to be laid side by side to…

A: We have to calculate the number of rhodium atoms.

Q: 1. The following substances will be used or observed in this experiment. Provide the chemical…

A: Elements contain only one atom and compounds contain more than one kind of atoms. Metals are…

Q: Enter the symbols for the ions of sodium and phosphorus .

A: Sodium is an element which lies in group IA.  Sodium has a charge of +1.  Losing of one electron…

Q: Last, need help with question Number 5

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Q: Which of the following could describe an element?   I II III All of them None of them

A: Matter: Matter can be defined as any component which occupies space and has mass.

Q: the history of the discovery of hydrogen and what properties they observed to identify it

A: Position of hydrogen in periodic table:   Hydrogen is regarded as rogue / disputable element because…

Q: (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a vanadium atom…

A: (a)Calculate the radius of vanadium atom in centimeters and meters:

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: Which of the following elements is a metal?   phosphorus nitrogen strontium fluorine argon

A: To find: The element that is metal

Q: a certain compound is made up of 2 chlorine atoms, one carbon atom, and one oxygen atom. What is the…

A: A chemical formula is defined as the composition of elements present in the compound in a fixed…

Q: How many electrons is the element Strontium (Sr) likely to gain or lose?

A: Strontium is represented by Sr. The atomic number of Sr is 38. Sr Electronic configuration = [Kr]…

Q: What did Mendeleyev do with his Table of the Elements that surprised people?

A: In the given question  Mendeleev arranged the elements that elements with the same physical and…

Q: C. Magnesium and fluorine: D. Aluminum and chlorine: E. Beryllium and nitrogen

A: We can form chemical formula of ionic compound by criss-crossing the valencies of ions.

Q: The elements of group 4A show an interesting change in properties moving down the group. Give the…

A: The name and chemical symbol of each element in the group 4A is to be given and label it as a…

Q: hydrogen peroxide → water + oxygen List two physical / chemical properties for each compound

A:

Q: 2 Most of the elements are solids at room temperature. Give three examples of elements that are…

A: Elements: It is a pure substance that consists of atoms having the same number of protons in their…

Q: polyatomic ions?

A:

Q: What is the symbol of the element in Group 4A(14) and Period 2?

A: Given,  Group number of the element = 4A that is 14  And  Period number of the element = 2  What is…

Q: Who was the first scientist to classify elements according to their properties?

A: There are over hundreds of elements known to us. To avoid confusion, scientists need to classify…

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

A: To write the chemical formula and physical state of silver, thorium, and Fluorine.

Q: The radius of a tantalum atom is 142 pm. How many tantalum atoms would have to be laid side by side…

A: The radius of tantalum atom =142 pm=142 x 10-12 m 1 pm = 10-12 m Diameter of tantalum atom =2 x 142…

Q: Which of the following statements is not true about the element potassium? Group of answer choices…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: In the periodic table, do the chemical properties change more than through a period or through a…

A: Periodic table is table in which the elements are arranged based on there electronic configurations.…

Q: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…

A: Given :- radius of tungsten atom = 137 pm  To calculate :- number of tungsten atoms in 1.99 mm

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.