Are you 9th class students? This article helps you about your physics chapter. In this chapter you’re going to learn about the matter around us. In this chapter there are many topics. Here we are explaining a few topics from this chapter. We hope u well understand.
Matter is anything that pervades space and mass is called matter. Materials such as air and water, sugar and sand, hydrogen and oxygen are made up of very small particles. Matter particles have space in between them, and this space gets attract each other. Classification: Substances are classified as solids, liquids and gases based on physical properties. On the basis of chemical properties, substances are classified as elements, compounds, and mixtures.
All matter is made up of atoms. Whether a substance is solid, liquid or gas depends on the position of the atoms. The particles that make up the solid are very dense and cannot move freely. This arrangement gives the solid a special shape and makes it difficult to compress. The liquid particles are also tightly packed. Unlike solid particles, liquids are not fixed in a certain place and move more freely. This property gives unique properties to liquids, i.e. the shape of the container they are in. However, there is little space between the liquid particles and the liquid cannot be compressed easily. The gas forming particles are separated from each other and move freely. This makes it very easy to compress gas.
Matter around us chapter topics
- What is a Mixture?
- Types of mixture
- What is a Solution?
- Concentration of solution
- What is a suspension?
- What is a colloidal solution
- Separating the components of a mixture
- How can we obtain coloured component dye from blue black ink?
- How can we separate cream from milk?
- How can we separate a mixture of two immiscible liquids
- How can we have a mixture of salt and camphor?
- Is the dye black ink a single colour?
- How can we separate a mixture of two miscible liquids
- How can we obtain different gases from air
- From an impure sample how to obtain pure copper sulphate?
- Physical and Chemical Changes
- What are the Types of Pure Substances?
What is the mixture?
Mixtures are formed in more than one pure form of matter. We know that dissolved sodium chloride can be separated from water by the physical process of Evaporation. However, even sodium chloride pure substance and it cannot be separated
The physical process as its chemical components. Similarly, sugar is a substance
The same kind of pure material and its composition is the same throughout. Soft drinks and soil are not the same pure Ingredients. Of any origin Might be pure substance, it always will be The same characteristic features.Therefore,we can say that it is a mixture Containing more than one pure ingredient.
What is a Solution?
A solution is a homogeneous mixture of two or more materials. you come in different forms and types of solutions in your daily life. Lemon juice soda water etc. Are examples of all solutions usually we think of a solution as a liquid containing solid liquid or gaseous melted in it. But we can also be assertive solution mixture and gaseous solution air. There is homogeneity in solution particle level. For example lemon juice tastes good the same throughout. The cells of which it shows sugar or salt are evenly distributed.
Separating the Components of a Mixture:
We learned that there are a lot of natural ones. The ingredients are not chemically pure and are different. Used to obtain partitioning methods of individual components from the mixture. Dissociation makes it possible to study and use individual components of the mixture.
Different mixtures can be separated simply into their respective parts physical techniques such as handpicking sieve etc the filter we use in our daily lives sometimes special techniques need to be used for the partitioning of a mixture.
Physical and chemical changes:
The interchange of states is physical change, because these things happen without changes in chemical compounds like ice water and water vapor; they are visible differently. But, physically appearance properties are different chemically they are the same. When compared both water and cooking oil they are liquid physically they are the same but their chemical properties are different.
They are different in smell and flame. Oil is known to burn in air but not water extinguish the fire. It is this chemical property of oil that is different from water, burning is a chemical change of oil and water. At this point, one substance reacts with another for change in chemical composition, changing the chemical properties of the material and by this we get something new. Also known as chemical reaction or modification in chemicals.
You have studied how solid, liquid, and gas particles are arranged and accomplished these activities. You have achieved the goal of this experiment! Please complete your textbook topic. For more topics ask your teacher or search the internet for a better explanation.