It can only be worked hot, produces a hard, strong metal that is suitable for casting. What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur?

Metals are lustrous because they are shining in nature. 60. Milk is not a pure substance.

The elements are not bonded in constant ratios, much like the raisins and flakes in Raisin Bran. 12.

(d) The three important metalloids are ______, _______ and__________ . Name a metal which is soft and a non- metal which is hard. 1. What is the other name for impure substances? Mercury is a liquid metal and bromine is a liquid non-metal which exist as liquids at room temperature. Two chemical substance X and Y combine together to form a product P which contains X and Y. X and Y cannot be broken down into simpler substance by simple chemical reactions. 19. Red brass usually contains 85% copper, 5% tin, 5% lead, and 5% zinc.

A mixture is two or more substances (usually more than just some elements) that can be separated by ordinary means (ordinary meaning non-chemical). Brass is any alloy consisting primarily of copper, usually with zinc.In some cases, copper with tin is considered a type of brass, although this metal historically has been called bronze.This is a list of common brass alloys, their chemical compositions, and the uses of the different types of brass. What are the three groups into which all the elements can be divided?

1. The matter is anything that has mass and occupies space. please mark me as brainliest shivamkumar6556 shivamkumar6556 Brass is a mixture of the elements of copper and zinc. What are the two types of pure substances? 43. Metalloids are those elements which are neither good conductors of electricity like copper nor insulators like sulphur. The element which is not common between the compounds called baking soda and soda ash is: 61.”Is malleable and ductile” best decribes: 62. 16.

33. It contains many ingredients. (a) What is a mixture? It's used for seawater service and in Euro coins (Nordic gold).

Sugar contains Carbon, hydrogen and oxygen. Required fields are marked *. It shows the properties of its constituents. 3.Sugar solution, salt solution are examples, 3. Example, sulphur is an element made up of sulphur atoms and therefore we can say that it is a pure substance. By physical processes it can be separated into simpler substance, 1.

Which of the following is not a mixture? Its universal nature can yield finishing results on any surface such as Stainless steel, brass, aluminum, copper, zinc, gold, silver, wood, painted surface etc. Give two examples of pure substances. 45. 55. Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element. Metals are malleable, ductile and sonorous. This is a list of common brass alloys, their chemical compositions, and the uses of the different types of brass. 66.

Name one element, one compound and one mixture. It can be separated into constituents by the physical processes, 3.Shows the properties as that of its constituents. 14. 43. (i) Pure substances contain only one kind of particles, (ii) Pure substances may be compounds or mixtures, (iii) Pure substances have the same composition throughout, (iv) Pure substances can be exemplified by all elements other than nickel. If you are using liquid compound, start with a few drops to dampen part of the rag; with a dry compound… 17. Alpha-beta brass, Muntz metal, or duplex brass. State two reasons for supposing that brass is a mixture and not a compound. Does not have a fixed melting point and boiling point. Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine. (ii) Compound: It is a substance consisting of two or more elements combined chemically in a fixed proportion by mass. (a)An element is made up of only one kind of atoms. It is the best compound to use on softer metals like brass… (b)Graphite is used for making electrode in a dry cell. 23.

52. Which of the following statement are true for pure substances? Elements can be divided into metals, non-metals and metalloids. Compounds – Common salt, Sea water, Marble, Mixtures – Brass, Sand, Petroleum, Chalk, Air. 35. 1. (iii) Mixture: Mixture is a substance that is made up of two or more paticles or substances mixed by physical process. This substance is: 59. Give two points of evidence to show that sodium chloride is a compound. All the matter around us is not pure. Which of the following substances are elements? While brass is an alloy of copper and zinc, bronze is an alloy consisting mainly of copper, combined most often with tin, but at times also with other metals. Air is a mixture as it is composed of different gases.

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