Chapter - 2, Is matter around us pure?, Science, Class 9Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 2, Is matter around us pure?, Science, Class 9
PURE SUBSTANCES
WHAT IS A MIXTURE?
HOMOGENEOUS MIXTURE
HETEROGENEOUS MIXTURE
DIFFERENCE BETWEEN MIXTURES AND COMPOUNDS
SOLUTION
PROPERTIES OF SOLUTION
DIFFERENT TYPES OF SOLUTIONS
CONCENTRATION
SUSPENSION
COLLOIDAL SOLUTION
PROPERTIES OF COLLOIDS
TYNDALL EFFECT
COMPONENTS OF COLLOID
SEPARATING THE COMPONENTS OF A MIXTURE
PHYSICAL CHANGE
CHEMICAL CHANGE
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
Chapter - 2, Is matter around us pure?, Science, Class 9Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 2, Is matter around us pure?, Science, Class 9
PURE SUBSTANCES
WHAT IS A MIXTURE?
HOMOGENEOUS MIXTURE
HETEROGENEOUS MIXTURE
DIFFERENCE BETWEEN MIXTURES AND COMPOUNDS
SOLUTION
PROPERTIES OF SOLUTION
DIFFERENT TYPES OF SOLUTIONS
CONCENTRATION
SUSPENSION
COLLOIDAL SOLUTION
PROPERTIES OF COLLOIDS
TYNDALL EFFECT
COMPONENTS OF COLLOID
SEPARATING THE COMPONENTS OF A MIXTURE
PHYSICAL CHANGE
CHEMICAL CHANGE
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
It is my friend's PPT for School Science Seminar made by Me. He stand at 1st position in the Seminar. Its the 1st chapter of class 9th Science of CBSE. Just View and You will definitely like it.
condition for the chemical change ICSE class 9tabishkamran
in this module will discuss about the condition for the chemical change . what are the factors are responsible for the chemical change. and idea of catalyst
It is my friend's PPT for School Science Seminar made by Me. He stand at 1st position in the Seminar. Its the 1st chapter of class 9th Science of CBSE. Just View and You will definitely like it.
condition for the chemical change ICSE class 9tabishkamran
in this module will discuss about the condition for the chemical change . what are the factors are responsible for the chemical change. and idea of catalyst
CHANGEOF STATE
STATES OF MATTER
There are three states, or phases, of matter.
They are:
Solid
Liquid
Gas
When a substance changes from one state, or phase, of matter to another we say that it has undergone a change of state.
MELTING
The change of state from solid to liquid state is called melting.
The temperature at which the solid states of the substance changes into the liquid states of the substance is called its melting point.
The temperature remains constant until the entire amount solid is converted into liquid state
VAPORISATION
The change of state from liquid to vapour is called vaporisation.
The liquid and vapour states of the substance coexist in thermal equilibrium during the change of state from liquid to vapour.
The temperature at which the liquid states of the substance change to its vapour state is called its boiling point.
CONDENSATION
The process of changing gas (or vapour) to a liquid by cooling is called condensation
Condensation is the reverse of boiling (or vaporisation).
FREEZING
The process f changing a liquid into a solid by cooling is called freezing
Freezing is reverse of melting
Freezing means solidification.
SUBLIMATION AND DESPOSITION
The process of changing of solid directly into vapour (or gas) is called sublimation.
The process of changing of vapour (or gas) directly into solid is called sublimation and desposition.
EFFECT OF PRESSURE ON MELTING POINT
Under normal atmospheric pressure, ice melts at 0 °C. However, this can change if the air pressure changes.
When the two ice cubes are pressed together, the melting point is lowered.
The ice melts since its temperature (0 °C) is above the new melting point.
When the ice cubes are released, the ice freezes again at 0 °C joining the two ice cubes together.
Hello Friends,
I have made this PPT especially for 10th Standard students of Maharashtra State Board (SSC). This PPT is made highly informative and illustrative, so that each and everyone of you can understand the basics of Science.
Best of Luck!
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
Colloidal Dispersion, Its Types and Method of PreparationChitralekhaTherkar
Dispersion
Definition of Colloids
Shapes and Sizes of Colloids
Classification of Colloids
Properties of Colloids
1. Optical Properties.
2. Electrical Properties.
3. Kinetic Properties
Purification of Colloids
Method of Preparation of Colloids.
Physical Stability of Colloids.
Factors affecting Colloidal Dispersion.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
CBSE Class IX SCIENCE CHEMISTRY Is matter around us pure
1. IS MATTER AROUND US
PURE
Pranav Ghildiyal
Roll no.
SCIENCE PROJECT
2. Matter is a general term for the substance of which all physical
objects are made, however in practice there is no single correct
scientific meaning; each field uses the term in different and often
contradictory ways. Whereas "matter" originally (in Aristotelian
hylomorphism) referred not to an independent thing, but to a co-
dependent "principle," the modern conception is that matter is a
"substance“ that is to say, it exists even apart from
composing something else. Modern science identifies this "substance"
through its physical properties; the most common current definition
of matter is anything that has mass and occupies volume. Matter is
commonly said to exist in four states ( or phases) : solid, liquid,
gas and plasma.
However, advances in experimental technique have realized other
Phases.
3. The substances which do not have adulteration are
known as pure substances. Some are given below.
Milk Bread Ghee Jam
4. A mixture is when two or more different substances are mixed
together but are not combined chemically. The molecules of two or
more different substances are mixed in the form of mechanical
mixtures, solutions, suspensions, and colloids.
While there are no chemical changes to its constituents, the
physical properties of a mixture such as its melting point, may differ
from those of the components. Some mixtures can be separated into
their components by mechanical means.
There are two types of mixtures.
(i) Homogeneous
(ii) Heterogeneous
5. HOMOGENEOUS HETEROGENEOUS
Substances that look the
same throughout.
Homogeneous substances
have one phase and uniform
composition.
Example :Alcohol ,wine ,milk
substances in which you can see
more than one color or type of
matter.
Heterogeneous substances have
more than one phase and a non-
uniform composition.
Example : Sandy water ,
orange
juice with pulp in it sugar
cornstarch.
6. A solution is a homogenous mixture of substances with variable
composition. The substance present in the major proportion is called the
solvent, whereas the substance present in the minor proportion is called the
solute. It is possible to have solutions composed of several solutes. The
process of a solute dissolving in a solute is called dissolution. There are three
types of solution :-Solid, Liquid, Gas.
CHARACTERISTICS OF SOLUTION
A solution is something dissolved in something else. By dissolved it mean it
needs to have some partials ionized a solid you place in water that dissociates
(ions split apart from each other) makes a solution a good solution you can
make in your kitchen is a salt-water solution, Put some regular table salt in a
glass and stir it and you will notice the salt "disappears" what happens is the
sodium ions and the chloride Ions separate and 'hide' between water
molecules.
.
7. Types of solution
Solid
• Solid substance
have definite
shape,
• Fixed volumes,
• Are rigid.
• Cannot be
compressed
Liquid
• Liquid substances
doesn’t have definite
shape ,
• Definite volume,
are Non -rigid.
• Cannot be
compressed.
Gas
• No definite shape.
• No definite
volume.
Are not at all
rigid.
• Can be easily
compressed
8. •A solution is a homogeneous mixture. The particles of a solution are
smaller then 1nm in diameter, so they cannot be seen with naked eye.
•Because of very small particle size, they do not scatter a beam of light
passing through the solution. So, the path of the light is not visible in the
solution.The solute particles cannot be separated from the mixture by
the process of filtration. The solute particles do not settle down when
left undisturbed. That is, a solution is stable.Many reactions do not
occur until the solid reactants are dissolved to make a solution.The
solvent is present in greater amount in greater amount.
9. SOLVENT SOLUTE
The component of the
solution that dissolves the
other component in it (usually
the component present in
larger amount) is called the
solvent.
Present on a greater
proportion in the solution.
Dispersed phase.
Solution may or may not be in
the same state of matter as the
solute.
The component of the
solution
that is dissolved in the solvent
(usually the component
present in lesser quantity ) is
the solute.
Present in lesser proportion
in the solution.
Medium of dispersion
solute.
Solution will be in the same
state of matter as the solute.
10. The concentration of a solution refers to the strength of the solution.
Concentration = quantity of solute
quantity of solution (not solvent)
There are 3 basic ways to express concentration:
1) percentages,
2) very low concentrations,
3) molar concentrations
1) Percentage (%) concentration can be in V/V, W/W, or W/V
2)Expressing concentrations in parts per million (ppm) requires the
unit on
top to be 1,000,000 times smaller than the unit on the bottom.
3) Molar concentration is the most commonly used in
chemistry. Ensure that units are mol/L.
11. A suspension is a heterogeneous fluid containing solid particles
that are sufficiently large for sedimentation. Usually they must be
larger than 1 micrometer. The internal phase (solid) is dispersed
throughout the external phase (fluid) through mechanical agitation,
with the use of certain excipients or suspending agents. Unlike
colloids, suspensions will eventually settle. An example of a
suspension would be sand in water. The suspended particles are
visible under a microscope and will settle over time if left
undisturbed. This distinguishes a suspension from a colloid, in
which the suspended particles are smaller and do not settle.
Colloids and suspensions are different from solutions, in which the
dissolved substance (solute) does not exist as a solid, and solvent
and solute are homogeneously mixed.
12. The particles of suspension can be seen by the naked eye.
The particles of a suspension scatter a beam of light passing
through it and makes its path visible
The solute particles settle down when a suspension is left
undisturbed, that is, a suspension is unstable
13. colloid is a type of mixture in which one substance is dispersed
evenly throughout another. A colloidal system consists of two
separate phases: a dispersed phase (or internal phase) and
a continuous phase . A colloidal system may be solid, liquid, or
gaseous.
Many familiar substances are colloids, as shown in
the chart below. As well as these naturally occurring colloids,
modern chemical process industries utilize high shear mixing
technology to create novel colloids.
Some colloids are translucent because of the Tyndall effect,
which is the scattering of light by particles in the colloid. Other
colloids may be opaque or have a slight color.
14. There are many types of colloids :-
Aerosol(gas +liquid/solid e.g. fog and smoke)
Foam(liquid +gas e.g. whipped cream)
Emulsion(liquid +liquid e.g. milk)
Sol(liquid + solid e.g. paint)
Solid foam(solid + gas e.g. marshmallow)
Solid emulsion(solid + liquid, e.g. cheese)
Solid Sol(solid + solid e.g. pearl.)
15. By a colloidal solution one understands a solution, in which
the solved particles are present in such a small grain size that
they cannot be separated by filtration. The solved particles are
larger than molecules, but they are smaller than fillers
in suspensions. Therefore these colloidal solutions behave partly
like genuine solutions. In order to keep such colloidal solutions
stable and to prevent precipitations, wetting and dispersing
agents as well as other additives are added. In
foundries, colloidal graphite solutions are used as die coatings.
16. One property of colloid systems that distinguishes them from
true solutions is that colloidal particles scatter light. If a beam of
light, passes through a colloid, the light is reflected by the
colloidal particles and the path of the light can i.e., be observed.
A colloid is a heterogeneous mixture.
The size of particles of a colloid is too small to be individually
seen by naked eye.
Colloids do not settle down when left un disturbed, that is, a
colloid is quite unstable.
17. Common examples of colloids
Dispersed
phase
Liquid
Solid
Gas
Liquid
Solid
Gas
Liquid
Solid
Dispersing
space
Gas
Gas
Liquid
Liquid
Liquid
Solid
Solid
Solid
Example
Fog, clouds, mist
Smoke, automobile exhaust
Shaving cream
Milk, face cream
Milk of magnesia, mud
Foam, rubber, sponge, Pumice
Jelly, cheese, butter
Coloured gem stone,glass
Type
Aerosol
Aerosol
Foam
Emulsion
Sol
Foam
Gel
Solid Sol
18. A pure substance is a substance where there is only one kind
of matter present and only one kind of particles. Where as a
mixture is an impure substance that has two or more kinds of
matter present and two or more kinds of particles present. Also
a pure substance has fixed, sharp melting and boiling points
and a mixtures varies.
19. Substance consisting of atoms which all have the same number of
protons – i.e. the same atomic number. Elements are chemically the
simplest substances and hence cannot be broken down further using
chemical methods. At 75 percent, hydrogen is the most abundant
element in the universe, followed by helium at 23 percent and
oxygen at 1 percent. The other elements make up the remaining
1percent. In the earth's crust, oxygen (47 %) is the most abundant
element, followed by silicon (28 %) and aluminum (8 %).
75%
23%
1%
1% Elements in the universe
hydrogen
helium
oxygen
others
20. In chemistry, a compound is a substance that results from a
combination of two or more different chemical element s, in such a
way that the atoms of the different elements are held together by
chemical bonds that are difficult to break. These bonds form as a
result of the sharing or exchange of electron s among the atoms. The
smallest unbreakable unit of a compound is called a molecule.
21. IONIC COMPOUNDS MOLECULAR COMPOUNDS
Ionic compounds are formed
when metallic elements from
The left-hand side of the
Periodic Table react with
non metallic elements from the
right-hand side of the
Table. Ionic compounds have
high melting and boiling
points. Many ionic compounds
are soluble in water.
Molecular compounds form ed
when two or more nonmetal atoms
form units that are called
molecules. Molecular compounds
generally have low melting and
boiling points. Molecular
compounds do not conduct
electricity in the solid form or in
the liquid form. Some molecular
compounds dissolve in water and
some do not.
22. MIXTURES COMPOUNDS
A mixture is when two or more
different substances are mixed
together but are not combined
chemically. The molecules of two
or more different substances are
Mixed In the form of mechanical
mixtures, solutions, suspensions,
and colloids. While there are no
chemical changes to its constituents,
the physical properties of a mixture
such as its melting point, may differ
from those of the components.
In chemistry, a compound is a
substance that results from a
combination of two or more
different chemical element s, in
such a way that the atom s of the
different elements are held
together by chemical bonds that
are difficult to break. These
bonds
form as a result of the sharing or
exchange of electron s among the
atoms. The smallest unbreakable
unit of a compound is called a
molecule .
23.
24. Alloys
Alloys are mixture of two or
more metals or a non metal
and cannot be separated
into their components by
physical methods. But still, an
alloy is considered as
a mixture because it shows
properties of its constituents
and can have variable
composition. For example,
brass is a mixture of
approximately 30% zinc and
70% copper
Elements
The number of elements known
at present are more than Hundred.
Ninety-two elements are naturally
Occurring and the rest are man-
made.
Majority of elements are solid.
Eleven elements are in gaseous
state at room temperature.
Two elements are liquid at room
Temperature – mercury and Bromine.
Elements, gallium and cesium
become liquid at a temperature
slightly above room temperature
(303K)