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| Educational science animation " Classification of matter " : Classifying matter was the biggest challenge in the previous century and discovery of patterns was the key factor that helped in understanding the nature and its elements. This led to evolution of structure in science and many fields evolved from this structure, to make science what it is today. This animated chemistry topic gives in-depth information about classification of matter and is very useful for school teachers and students both.
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Category : Science
Type : Animation
Total animation length:
30 minutes
The animation covers:
What is an element ?
What are the properties of metal, nonmetals and metalloids
?
How do compounds form ?
Compound versus constituent elements ?
How do mixtures form? What are the types of mixture
?
Complete mechansim of salt dissolving in water explained
Law of conservation of mass
More about matter in explanatory notes:
Mendeleev's periodic table,
Why are most elements solid?
Why don't oil and water form homogeneous mixture?
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Classification
of matter
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Metals, nonmetals
and metalloids classification
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Non -metals
- Sulphur and Bromine
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Metals are
good conductors of electricity
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Metals are lustrous, they shine
in light
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Nonmetals
are brittle
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Metals are malleable and ductile
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Homogeneous
mixtures - salt is dissolved in water
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Sodium chloride - ions of sodium
and chlorine
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Heterogeneous mixtures - mixture
of sand and charcoal can be separated out using a
magnet
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Matter can be classified into
pure substances and mixtures.
A Pure substance has uniform composition throughout.
It consist only one phase i.e. it consists of molecule of
only one type
Example: Iron,water, table salt (NaCl) and sugar.
Pure substances are classified into two categories
1) Elements
2) Compounds
Classification of the elements is further done as metals,
nonmetals, and metalloids.
(Metals have a high melting and boiling point)
Compounds, in chemistry, are a substance composed
of atoms of two or more elements in chemical combination,
occurring in a fixed or definite proportion and arranged
in a fixed, definite structure. A compound is often represented
by its chemical formula. The formula for water is H2O,
and for sodium chloride, NaCl. The formula weight of a compound
can be determined from its formula.
Mixtures, in chemistry, are a physical combination
of two or more pure substances (i.e., elements or compounds).
Example: Petrol, milk and air (Air is homogeneous mixture of oxygen, nitrogen, carbon
dioxide and water vapour)
A mixture is distinguished from a compound, which is formed
by the chemical combination of two or more pure substances
in a fixed, definite proportion. The components of a mixture
retain their own chemical properties and may be present
in any proportion. For example, iron filings may be mixed
with powdered sulfur in any proportion, and even if very
fine iron powder is carefully mixed with powdered sulfur,
the two components are easily separated by means of a magnet.
Mixtures are often classified as homogeneous or heterogeneous.
Solutions and colloids are homogeneous mixtures.
The components of a homogeneous mixture are too intimately
combined to be distinguished from one another by visual
observation. A suspension is a heterogeneous mixture. The
particles in a heterogeneous mixture are coarse enough to
be distinguished by visual observation. |
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| Q1: |
what meaning of non metals |
sheng |
19/8/2015 |
| Ans: |
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| Q2: |
How electron was discoverd? |
Nazir shah |
19/9/2014 |
| Ans: |
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| Q3: |
what is metal and nonmetal |
iftekhar alam |
7/5/2013 |
| Ans: |
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| Q4: |
WHO INVENTED THE VIHECHELS |
BLAS ANTHONY CLAVANO |
8/2/2012 |
| Ans: |
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| Q5: |
is nickel a solid non metal |
vinit |
2/6/2011 |
| Ans: |
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| Q6: |
how to make mirror with sillica |
chetan |
21/9/2010 |
| Ans: |
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| Q7: |
what is the essential difference between animate and inanimate matter? |
Shereen |
23/1/2010 |
| Ans: |
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| Q8: |
what is the classification of suspension? |
kamini |
17/1/2010 |
| Ans: |
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| Q9: |
what are the most general classification of matter are sodium chloride, hydrochloric acid, salt and water, hair gel, sodium, smoke in air? |
twinkle |
20/8/2008 |
| Ans: |
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| Q10: |
we need hint to formulate questionnaire related to composition of matter,types of matter through examples of daily life |
zubia farah |
3/6/2008 |
| Ans: |
Some of the examples we have covered above, the questions can also be on is water a mixture or compound, what is paper? What is a plastic composed of? What is cloth? I believe things that you can look around yourself and list could be a good source of questions for your project. |
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| Q11: |
What is the meaning of hypothesis |
Aloysius |
21/9/2007 |
| Ans: |
Hypothesis is an idea that needs research and scientific evaluation to be proved correct or false. For example if someone puts forward an idea that summers are getting hotter year by year – this will be a hypothesis, suppose after careful research and data compilation he proves it to be correct then it becomes a theory or a part of larger theory that global warming is happening. Such hypotheses are used for predicting results, in labs, of weather, of behavior etc. |
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| Q12: |
Can matter be classified through visual observation |
Aloysius |
19/9/2007 |
| Ans: |
Classification of matter just by visual observation is difficult, for example sugar and salt solution, water and acid look similar, most gases like CO2 (a compound) and N2, O2 (elements) are not even visible. If you hold a piece of black rock in your hand, it will be difficult for you to say whether it is graphite or not. To separately categorize elements from compounds and compounds from mixtures, analysis and testing through physical and chemical means is necessary for classification. |
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| Q13: |
does suspension show tyndal effect? |
swarnim |
14/9/2007 |
| Ans: |
Only some suspensions such as emulsion (oil and water or kerosene and water) and colloidal dispersions (pottery clay and water, starch and water) show Tyndall effect (scattering of light when a light is shined through a suspension). It also depends on angle of light. Entirely colloidal solutions will look cloudy when the light is at an angle, but will look transparent when it is direct. Homogenous solutions (salt and water) and suspensions (Sand and water) do not show Tyndall effect. |
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| Q14: |
is acid is belong to classification of matter |
pauline |
29/8/2007 |
| Ans: |
There are more than 4 million chemical compounds known. Acid is a special class of compounds. They are formed from hydrogen ions (the positive part) and an anion (the negative part). Example HNO3, H2SO4, HCl etc. They can also be classified into organic and inorganic or on the basis of anions. But largely they are part of compounds. The same goes for bases. |
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| Q15: |
how can u classify metals |
pranathi |
7/8/2007 |
| Ans: |
Metals fall into the following non-rigid and not mutually exclusive classifications: alkali metals, alkaline earth metals, transition elements, noble (precious) metals, platinum metals, lanthanide (rare earth) metals, actinide metals, light metals, and heavy metals. |
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| Q16: |
how can you diffentiate the matter from the chemistry? |
Jethro |
7/8/2007 |
| Ans: |
Only look at its 'physical' properties ;) |
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| Q17: |
There is a big fault that "definition of pure substance" and air, milkand petrol are not pure substances |
nihal sokmen |
18/3/2007 |
| Ans: |
Yes there was a mix - up of lines in text in the details section, we have corrected that . Thanks a lot for pointing it out. We appreciate your suggestion. |
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| Q18: |
how Can One mark the difference Between a mixture and a asolution? |
Jerry |
23/2/2007 |
| Ans: |
A solution is a homogeneous ‘mixture’ where a solute is ‘dissolved’ in a solvent. The word ‘dissolved’ is important as salt or sugar mix to form a mixture, this mixture dissolves in water to form a solution. Solutions can be of gas-gas (O2 in N2), liquid-liquid (alcohol-water), solid-solid (steel), gas-solid (H2-platinum), gas-liquid (CO2 –water), liquid-solid (Mercury –Gold), liquid-gas (water-vapor in air) etc. Note that non-homogeneous mixtures like colloids and suspensions are not solutions. |
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| Q19: |
what is the classification of cement in chemistry? |
ian |
21/2/2007 |
| Ans: |
Portland Cement is a complex homogenous mixture of many compounds like Calcium oxide, CaO, Silicon oxide, SiO2, Aluminium oxide, Al2O3, Ferric oxide, Fe2O3 and sulphates. |
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| Q20: |
what is the angle between NaCl molecules? |
Pamela |
10/11/2006 |
| Ans: |
No bonds therefore no angles just close packing . NaCl (sodium chloride) is an ionic solid arranged in face-centered cubic lattice form with adjoining identical ions attached to each other, NaCl does not exist in a binary pair in nature unlike water or carbon where molecules form a covalent bond and have angles between them. In short angle “between” NaCl molecules is not possible. |
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| Q21: |
how make mirror within silver by electroless? |
saeed.abdeyazdan |
14/6/2006 |
| Ans: |
Mirrors are prepared either by Aluminum coating deposited on silver in a vacuum chamber or by Silver using wet process (hot and cold) . The coated glass is treated with AgNO3 solution for electrolysis. Deposition of silver is done by precipitating Silver out of AgNO3 solution onto a glass by a reducing agent such as Stannous chloride (or tartaric acid or sugar) already applied to the glass surface. The reaction is Sn(2+) + 2Cl(-) + 2Ag(+) + 2NO3(-) = Sn(4+) + 2Cl(-) + 2Ag(0) + 2NO3(-). |
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