Category Archive What is matter in chemistry for class 6


What is matter in chemistry for class 6

Matter can be identified by its characteristic inertial and gravitational mass and the space that it occupies. Matter is typically commonly found in three different states: solid, liquid, and gas.

A substance is a sample of matter whose physical and chemical properties are the same throughout the sample because the matter has a constant composition. It is common to see substances changing from one state of matter to another. To differentiate the states of matter at least at a particle level, we look at the behavior of the particles within the substance. When substances change state, it is because the spacing between the particles of the substances is changing due to a gain or loss of energy.

For example, we all have probably observed that water can exist in three forms with different characteristic ways of behaving: the solid state iceliquid state waterand gaseous state water vapor and steam.

what is matter in chemistry for class 6

Due to water's prevalence, we use it to exemplify and describe the three different states of matter. As ice is heated and the particles of matter that make up water gain energy, eventually the ice melts in to water that eventually boils and turns into steam.

Before we examine the states of matter, we will consider some ways samples of matter have been classified by those who have studied how matter behaves. Evidence suggests that substances are made up of smaller particles that are ordinarily moving around. Some of those particles of matter can be split into smaller units using fairly strong heat or electricity into smaller rather uniform bits of matter called atoms.

Atoms are the building blocks of elements. Elements are all those substances that have not ever been decomposed or separated into any other substances through chemical reactions, by the application of heat, or by attempting to force an direct electric current through the sample.

Atoms in turn have been found to be made up of yet smaller units of matter called electrons, protons, and neutrons.

Elements can be arranged into what is called the periodic table of elements based on observed similarities in chemical and physical properties among the different elements. When atoms of two or more elements come together and bond, a compound is formed. The compound formed can later be broken down into the pure substances that originally reacted to form it. Compounds such as water are composed of smaller units of bonded atoms called molecules. Molecules of a compound are composed of the same proportion of elements as the compound as a whole since they are the smallest units of that compound.

For example, every portion of a sample of water is composed of water molecules. Each water molecule contains two hydrogen atoms and one oxygen atom, and so water as a whole has, in a combined state, twice as many hydrogen atoms as oxygen atoms. Water can still consist of the same molecules, but its physical properties may change.

When matter changes from one state to another, temperature and pressure may be involved in the process and the density and other physical properties change. The temperature and pressure exerted on a sample of matter determines the resulting form of that the matter takes, whether solid, liquid, or gas. Since the properties of compounds and elements are uniform, they are classified as substances. When two or more substances are mixed together, the result is called a mixture.Vapours represent a gaseous state of a substance which is liquid at room temperature.

A substance which is in gaseous state at room temperature is called a gas. For Ex: Ammonia is a gas but on heating water forms vapours. All kinds of matter are classified into two types:. Material is said to be homogeneous if it has uniform composition and identical properties throughout Or a material is said to be homogeneous if it consist of only one phase. A material is said to be heterogeneous if it consists of a number of phases.

The different phases are separated from each other by distinct boundaries. A pure substance is one which is made up of only one kind of particles atoms or molecules. A mixture is one which contains two or more different kinds of particles atoms or molecules.

An element is usually defined as the simplest form of a pure substance with definite physical and chemical properties and which can neither be broken into nor built from simpler substances by any chemical or physical method. An element contains only one kind of particles. These particles may be atoms or molecules. For example : carbon, sulphur, iron, gold, hydrogen, oxygen, nitrogen, silver etc. The number of elements known to date is The elements whose properties are intermediate between those of metals and non-metals are known as metalloids.

Compounds are pure substances containing more than one kind of element or atom. In compounds the two elements are in a fixed proportion by mass and which can be decomposed into its constituent elements by suitable chemical methods.

The properties of a compound are completely different from those of its constituent elements.

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For example : Water is a compound containing hydrogen and oxygen combined together in a fixed proportion of by weight. It can be decomposed into its constituent elements hydrogen and oxygen by passing electricity through water. Water are completely different from its constituent hydrogen and oxygen.

All the compounds may be divided into two categories :. Organic Compounds are the compounds containing carbon and few other elements like carbonHydrogen ,oxygen ,nitrogen ,sulphur, halogens.

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They were originally obtained only from plants and animals. Inorganic Compounds are the compounds containing any two or more elements out of more than one elements known. A material containing two or more substances in any proportion is called a mixture. The properties of a mixture are the properties of its constituents. A mixture can be separated into its constituent by simple physical method.

An atom is the smallest particle of an element which may or may not be capable of independent existence. For example :Atoms of iron ,copper ,Silver ,Gold can exist freely whereas atoms of hydrogen ,oxygen, nitrogen cannot exist freely.

A molecule is the smallest particle of an element or a compound which can exist freely. Molecules may be classified into two categories:. The atomicity of metal elements like sodium,magnesium,aluminum,copper,iron etc is taken as 1. They are called as Monoatomic molecules. So the atomicity is 2. They are called as diatomic molecules.Question 1. Define matter. Answer: Anything that has mass and occupies space is called matter.

Question 2. What is the difference between mass and weight. The mass of a body does not change but its weight changes from place to place. Question 3. If an object weighs 6 N on earth what will be its weight on moon.

What will be the change in its mass? So mass of a body will remain the same on moon. Question 4. Write your observation and conclusion for the following: a When few marbles are put in a glass half filled with water. Answer: a Take some marbles and put them into the water of glass tumbler one by one. After some time you will notice that water level crosses the mark and rises. This is because the marbles occupy space. Again weigh the glass with the marbles. You will find that the second mass is greater than the first one.

This proves that, marbles have mass. This proves that, matter has mass and occupies space. Question 5.

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State three main characteristics of the particles of matter. Answer: Characteristics of Matter. Question 6. Differentiate between an atom and a molecule. Question 7.

what is matter in chemistry for class 6

Define : a Solid b Liquid c Gas. Answer: Giving two examples of each type. It suffers very small changes in volume by changing the temperature. It can not be compressed, e.

States of Matter

It takes up the shape of the containing vessels. It can be compressed to an extents, e.Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

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I don't have enough time write it by myself. John Ajas. Mai Chard. Mahamad Jamal. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Chemistry matter-ppt 1.One method of classifying matter is to start with the two main categories of pure substances and mixtures. Pure substances can be classified as either elements or compounds.

Mixtures can be classified as either homogeneous or heterogeneous. Another method of classifying matter is to start with the two main categories of homogeneous substances and heterogeneous substances. Heterogeneous substances are heterogeneous mixtures. Homogeneous substances can be classified into pure substances and homogeneous mixtures. Pure substances can be classified into elements and compounds. Everything around us which has some mass and occupies some space is known as matter.

Matter is made up of tiny particles called atoms and molecules. Not only this NaOH, infact your study table, pen, pencil and our bodies too can be considered as matter. Depending on the fact that how these atoms are arranged,in different substances we can classify matter into it's 5 states What is Matter? Chemistry Matter What is Matter? Key Questions How can matter be classified? What is matter? Can matter be destroyed? What are the properties of matter? How does matter differ from weight?

How does matter affect sound? How can I calculate the amount of matter in a given volume? How does matter change from one state to another? How can matter be classified? What happens when matter and antimatter collide? What is the difference between mass and substance? When calculating percent error, what does it mean if I get a negative number for mass?

Question 6d What are some examples of particulate matter? How does matter relate to mass? How does matter change when it melts? How does matter change when it is heated or cooled? How are matter and changes in matter described? What are some examples of the properties of matter?

Question bb1b9. Question d Question 63dca. Question c.Question 1. State what is Science and give the basic bifurcation of Science with reasons. Answer: Science is the subject which includes the study of various experiments performed by a scientist with all observations recorded and inferences concluded. Bifurcation : Science is bifurcated into three main branches— Physics, Chemistry and Biology which make study of each branch simple and more focussed.

Question 2. Give the basic difference between Inorganic Chemistry and Organic Chemistry. Answer: a Inorganic chemistry includes study of innumerable elements and compounds b Organic chemistry includes study of specific carbon compounds built up mainly of carbon and hydrogen. Question 3. State the functions of the following basic glass apparatus.

It is made of pyrex. Since the flask is round bottomed, heat is uniformly distributed throughout on heating. Question 4.

State why a round bottom flask is preferred to a flat bottom flask — during preparation of gases in the laboratory. Answer: Round bottom flask is preferred to flat bottom flask because in round bottom flask heat is uniformly distributed throughout on heating.

Question 5.

what is matter in chemistry for class 6

State the function of —. It also prevents glass apparatus from cracking. Question 6. State the method used for collecting the following gases —. In this method, the gas jar is filled with water and inverted over the beehive shelf, so that the water is displaced downwards and oxygen is collected upwards.

This method is used for gases like ammonia which is soluble in water and lighter than air. This method is used for gases like SO 2 which is soluble in water and heavier than air.

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Question 7.Useful Links World of Warships Replays Enabling replays Ship Comrade The Warships Podcast warships. You won't be able to vote or comment. Any of them would be nice. I didnt play WoWS back then. Why wasn't it just nerfed. Makes sense to replace it then.

I just adore the way her superstructure hugs the first smokestack. After carrier rework maybe. I just looked at the names. I thought you posted that twice. What do you foresee her being able to do. You see, imagine Tone class as a Myoko, with 4 turrets, all in the front and the rear as an aircraft carrier wannabe: a big hangar, many catapults and as many floatplanes to be launched, more than one at a time.

Bismarck is more famous and the namesake ship however, Tirpitz is a better premium since she offers those unique torpedoes.

Selina Concise Chemistry Class 7 ICSE Solutions – Matter and Its Composition

One of the Tennessee or Nevada class battleships. Bismarck is captained by Bismarck. IIRC I think we are getting the Enterprise and some IJN CV.

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Really hoping for an Italian premium. I would love to see Roma or any of the Littorio Class show up. I would love to see Roma or any of the Littorio Class blow up. Anything UK would be great. Or am I missing something about Jean Bart. L-III was a design with three triple 18 inch guns, 222mm of deck armor and a 18 inch belt inclined at 10 degrees and could make 26 knots.

With modernization, she would be a perfect Tier X.

Classification of Matter

Yukikaze, Hibiki and any repair ship. Pls, WG gib Haida. Either at T7 or T8. Hence the poi meme since no one "really" sure. But Shigure was a legend even within the IJN, considered the good luck ship of the fleet. I keep hearing Shigure would be better but no one ever explains why. Best ship at Guadalcanal. The Littirio class is my absolute favorite ship from when i played Seapower (models on floors). With some premiums too ofc.

An IJN or two besides Mutsu. Posts are automatically archived after 6 months. This is an archived post. Create Accountemail:Log Inusernamepasswordreset passwordlog inFind the good stuffReddit is filled with interest based communities, offering something for everyone.

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Faekora Posted on10:12 pm - Oct 2, 2012

Entschuldigen Sie, dass ich mich einmische, aber mir ist es etwas mehr die Informationen notwendig.