RAYAT SHIKSHAN SANSTHA SATARA KARMAVEER VIDYA PRABODHINI SATARA

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, SATARA. MADHYA VIBHAG POWERPOINT PRESENTATION 9 TH STD. -SCIENCE & TECHNOLOGY WITH SYLLABUS 2011 -12

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA UNIT : - COUNTING MATTER SUB UNITS : -4. 1. . LAWS OF CHEMICAL COMBINATION 4. 2 - THE ATOM 4. 3 - MOLECULE 4. 4 - MOLECULAR MASS &MOLE CONCEPT 4. 5 – CHEMICAL FORMULAE OF COMPOUNDS 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA DEFINITION Matter- Matter is anything around us that we can perceive through our senses. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA LAW OF CONSERVATION OF MATTER “Matter is neither gained nor lost during a chemical reaction. ” This is called the law of conservation of matter. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA LAW OF CONSTANT PROPORTION - “In a compound, constituent elements are always present in a definite proportion by weight. ” It is called the law of constant proportion. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA SYMBOLS The symbol of any element indicates one atom of that element. Symbol of the element is the first letter of the name of the element or first letter and second/other prominent letter in the name. ” 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA CHEMICAL SYMBOLS OF THE ELEMENTS Hydrogen Iron Copper Sulphur 9 TH & TECH-PPT - ♂ - © - 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA MOLECULE - Molecule is made up of two or more atoms of elements. Atoms of some elements exist independently. e. g. - H 2 , Cl 2 , O 2. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA MOLECULAR MASS ‘The sum of the atomic masses of the atoms present in a given molecule is the molecular mass of the substance. ’ e. g. - Molecular mass of CO 2 = 44 and H 2 O= 18 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA MOLE - A collection of Avogadro’s number objects of the same type (such an atoms or molecules) is called a mole. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA RADICALS - Atoms or group of atoms having a positive or negative charge are known as radicals. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA VALENCY- The combining capacity of an element is known as its valency. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA VALENCYHydrogen Carbon Sodium Nitrogen Oxygen 9 TH & TECH-PPT - 4. COUNTING MATTER 1 4 1 3 2 SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA VALENCY- Neon Aluminium Chlorine Calcium Magnesium - 9 TH & TECH-PPT 4. COUNTING MATTER 0 3 1 2 2 SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA SODIUM BROMIDE - Chemical formula of Sodium bromide is Na. Br. The formula is obtain as follows – Symbol of Sodium is - Na & Symbol of Bromine is – Br. 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA Now, The valency of Sodium is +1 & The valency of bromine is -1. Now, Cross multiply the valencies Na Br +1 -1 The formula of sodium bromide is Na. Br 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA CALCIUM SULPHATE - Chemical formula of Calcium sulphate is Na. Br. The formula is obtain as follows – Symbol of Calcium is - Ca & Symbol of Sulphate is – So 4 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA KARMAVEER VIDYA PRABODHINI, MADHYA VIBHAG, SATARA Now, The valency of Calcium is +2 & The valency of Sulphate is -2. Now, Cross multiply the valencies Ca So 4 +2 -2 The formula of Calcium Sulphate is Ca. So 4 9 TH & TECH-PPT 4. COUNTING MATTER SCIENCE STD.

RAYAT SHIKSHAN SANSTHA, SATARA MAHARAJA SAYAJIRAO VIDYALAYA, SATARA. Shri. SAYYAD J. M. 9 TH STD. -SCIENCE & TECHNOLOGY WITH SYLLABUS 2011 -12