White silver chloride in sunlight turns to           Grey       Yellow       Remain white       Red

Q: Indicate the physical state for each of the following elements at 25 °C and normal pressure.…

A: There are three physical state of matter; solid, liquid and gas.

Q: Define chloride

A: Chloride is a compound that contains Cl and another ion.

Q: L. Identify the metal

A:

Q: Describe the general characteristics of metals.

A: Introduction: In the periodic table, all elements can be classified into three categories, 1.Metal:…

Q: Name the transition metal ions in their new name and old name format: Cr2+ Cr3+ Cu+ Cr2+ Fe2+…

A:

Q: unat is the formula of the baduct fron heating aluminum metal and Powdered sulfirg prediced

A: • aluminum metal on heating with powered sulfur gives aluminum sulfide      • The reaction is…

Q: Use the following key to classify each of the elements below in its elemental form:

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

Q: Why are metals commonly white but copper and gold are colored?

A: Answer - According to the question - Metal are white because  in  smooth surface these metal will be…

Q: The attraction that binds positive and negative charges together in an atom is known as the   a.…

A: Correct option is b, coulomb force. It is also known as electrostatic force of attraction which acts…

Q: When a metal leaf electroscope is charged by contact with a negatively charged rod: Oprotons move…

A: An atom consists of protons and neutrons present inside the nucleus and electrons revolve around…

Q: Differentiate the two classification of metals.

A: Metals can be classified into two.  1)  Ferrous metals  2) Non Ferrous metals

Q: By dissolving .... ...in water, colored solutions are formed a- NiCl, and FeCl3 b- NaCl and COCI, c-…

A: Given statement is :  By dissolving ...............in water, colored solutions are frmed.  a). NiCl2…

Q: Name two elements that occur in the free metallic state in nature.

A: The metals which are least reactive in nature can be found in free metallic state. Their reactivity…

Q: search at least five compounds/elements which has the same characteristics and color for the flame…

A: We are to list five elements/ compounds having same characteristics or color for flame produced.

Q: 23. A chemist walks into his laboratory and finds that his assistant has reorganized his chemical…

A: The most reactive metals are those which can react very fast to form compounds. All group 1 elements…

Q: Which of the following elements is tetratomic in its standard state? O sulfur selenium carbon O…

A: The elements given are sulfur i.e. S, selenium i.e. Se, carbon i.e. C and phosphorus i.e. P.

Q: Identify the group or period number described by each of the following:a. contains C, N, and Ob.…

A: In periodic table, all elements are arranged in increasing order of atomic number. Periodic table is…

Q: 1)When a positively charged metal touches an electroscope, electrons transfer from ______.…

A: Electrons in the metal of the electroscope are drawn to the charge and pass upward out of the leaves…

Q: Based on the PBS program Fabric of the Cosmos: Quantum Leap, quantum mechanics provides the…

A: Based on PBS program fabric of the cosmos : Quantum leap, quantum mechanics provides the foundation…

Q: A molecule of a certain compound contains two nitrogen atoms and four oxygen atoms. What is the…

A: • We have given that a molecule of a certain compound contains two nitrogen atoms and four oxygen…

Q: Differentiate between metal and non-metal on the basis of their chemical properties.

A: Metals are lustrous and opaque elements which are good conductor of heat as well as electricity. And…

Q: ACTIVITY 4 : Metallic Properties and Uses Procedure: 1. Complete the given table by listing metallic…

A: Electrical Properties : The electrical conductivity of a metal is determined by the ease of movement…

Q: At 200 ° C the liquid elements are: A) Zinc and lead B) Tin and gallium C) Only gallium D) Only zinc

A: The question is based on concept of melting point. it is the amount of energy required to melt The…

Q: A trace evidence analyst places crystals of an unidentified white powder onto the stage of a…

A: All materials can be divided into two categories, isotropic and anisotropic. Isotropic materials…

Q: identify the metal as representative element or transition element. Barium nitrite

A: The formula of the chemical compound provides a way to represent any chemical substance using the…

Q: Explain why the color of heated objects changes with their temperature.

A: Colour of any object appears due to the absorbance and emission of photon energy by an arranged…

Q: Which element has the following general properties: solid at room temperature, high luster,…

A: A solid-state is the state that has neither change in shape nor change in volume that means both are…

Q: All metallic elements are solid at room temperature except _________. A. sodium B. calcium C.…

A: At room temperature, mercury is not at solid state. Mercury is  liquid above 0°C Temperature This is…

Q: Use the following key to classify each of the elements below in its elemental form:

A: Discrete atoms tends to occur as individual atoms.  When two or more atoms held together by chemical…

Q: A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’…

A: The required reaction is as follows:

Q: Question 23 Silver nitrate must be store in a clear and tightly-closed bottle for storage. True O…

A: Silver nitrate decomposed in presence of sunlight .To prevent the decomposition of AgNO3 it should…

Q: at is the significance of knowing the properties of elements (periodic table) in the food industry…

A: There are certain elements like carbon , oxygen, hydrogen etc which are used in food industry as by…

Q: Zinc

A: Most reactive elements : Zn is more reactive than the Hg and Cd ..

Q: balanced

A: According to the question, we need to write the chemical reaction equation of solid calcium…

Q: Aluminum and iron ions (from FeCl3 and AlCl3)  have _______  positive charges that _______ the…

A: Ionic compound : ionic compound is formed by metal ion and non-metal Anion that means when metal…

Q: trogen tetroxide is a colorless gas while nitrogen diaxide is a brown gas, what color do you predict…

A: We will follow Le chatelier's principle. Le Chatelier's principle says that if a system is in…

Q: Classify each of the following as an oxide, acid, base or salt.

A: 1. AgCl is salt 2. Oxide 3.base 4.salt 5.bromous acid

Q: What metal ion is responsible for the red firework?   Street lights are yellow/orange in color and…

A: What metal ion is responsible for the red firework?   Street lights are yellow/orange in color and…

Q: Which pair of elements is both malleable and able to conduct heat? Group of answer choices gold and…

A: Answer is  gold and neon

Q: Decide which element probably has a boiling point most and least similar to the boiling point of…

A: The elements are grouped in the periodic table of elements where they are placed in specific groups…

Q: what are Metals

A: Metal are the substances which form naturally beneath the surface of earth. They generally are found…

Q: 1. Those features or characteristics of metal that make it useful and distinctive from all others.…

A: A metal is a material that shows a lustrous appearance when polished and is a good conductor of heat…

Q: which element is a metal in period 5 of the periodic table

A: Periodic table:In a periodic table elements are arranged by atomic number, electron configuration,…

Q: What is the correct balanced equation for the reaction between cesium and chlorine? Express your…

A:

Q: Discuss the groups of chemical elements that are the most active. give examples or explanation.

A: The primary difference between metals is the ease with which they undergo chemical reactions. The…

Q: What is the term for a homogenous mixture of two or more metals? A) metalloid B) a compound C) an…

A: The detailed explanation of the given terms are as follows: A) metalloid: A metalloid is a type of…