What are the two lightest quarks? What is the lightest alkaline earth metal? Which pure substance can be classified as an element? What is the lightest halogen? What is the smallest part of the atom that has almost no weight? What is the heaviest element on the periodic table?
What is a pure substance ? Give its one characteristic. View Solution What is electrochemical equivalent of a substance ? View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths Cengage Solutions for Maths ...
There are, however, some other definitions e.g. "A form of matter that has both definite composition and distinct properties. A pure substance cannot be separated into simpler components without chemical change. Physical changes can alter the state of matter but not the chemical identity of a ...
Warming-up What Are Substances Composed of? The theory of four elements As recently as a few thousand years ago,western scientists considered the whole earth to be made of 4 elements:Earth,Air,Fire,and Water.Air was the underlined element:this single substance made up everything in the world...
Pure substances are substances that are made of just one element or chemical compound. For example, hydrogen is a pure substance since it contains just hydrogen, which is one of the chemical elements. MIxtures and Colloids:In chemistry, a mixture is a physical combination of two or more ...
A pure substance can be either an element or a compound.Pure substances are again two types: Element Compound Element: An element is defined as a pure substance that contains only one kind of particles. These particles may be atoms or molecules. Carbon, sulphur, iron, lead, gold, mercury,...
A pure substance is... made up of two or more types of stuff. made up of only one type of stuff. made up of three or more types of stuff. a mixture 3. Multiple Select 1 min 1 pt Which of the following are pure substances? (choose 2) chocolate flavoured milk purified wa...
(d) Culture of gene View Solution What is a pure substance? View Solution what are the advantages of tissue culture methods over conventional programmes ? View Solution Variation appearing in tissue culture are : View Solution First successful tissue culture was that of View Solution ...
If you say that something has no substance, you mean that it is not true. What are the two types of substances? By their chemical composition, pure substances get divided into two types – elements and compounds. Elements – An element is a pure substance which contains a single kind of ...
The main classifications of matter include the categories element and compound, either of which may also be called a substance (which is a less specific term), and mixture, of which there are also many sub-categories.Definition of a (Chemical) Mixture:...