3. ANALOGY Mangosteens have SIMILAR reddish brown rind but DIFFERENT number of seeds
4. ANALOGY If, mangosteens ≈ ISOTOPES Where : reddish brown rind ≈ PROTON NUMBER number of seeds ≈ NUCLEON NUMBER What is the meaning of isotopes ?
5. DEFINITION OF ISOTOPES Isotopes can be defined as atoms of the certain element which have the but SAME PROTON NUMBERS DIFFERENT NUCLEON NUMBERS
6. Teaching notes proton proton proton neutron neutron electron electron electron ISOTOPES 1 proton 1 proton 1 proton 1 electron 1electron 1 electron 0 neutron 1 neutron 2 neutron Hydrogen-3 ( Tritium ) Hydrogen-2 ( Deuterium ) Hydrogen-1 ( Protium ) Hydrogen Isotopes Element
7. DEFINITION OF ISOTOPES Isotopes are atoms of the certain element which have the SAME NUMBER OF PROTONS but DIFFERENT NUMBER OF NEUTRONS in the nucleus of the atoms. So, the other definition of isotopes:
11. 1. A carbon-12 atom and a carbon-13 atom are called………………… 2. Isotopes are atoms of the same element with different numbers of …………………… 3. Isotopes has similar …………… properties and different ……………. properties. 4. Oxygen-18 has …… electrons, 8 protons and ………….. neutrons. 5. An element P has a nucleon number of 31 and proton number of 15. Therefore, the number of electrons is ………… and the number of neutrons is ……… 6. Element Q has two isotopes. If Q-127 has 53 protons, how many protons does Q-131 have ? 7. Chlorine-35 and chlorine-37 are isotopes. There are 20 neutrons in Chlorine-37. How many protons are there in Chlorine-35 ? 8. A neutral atom of element G has 26 protons and 28 neutrons. The nucleon number for element G is …………………. QUESTIONS
12. H N B S D F V C D R E Q A E R F K K J B F R E E Y E E R H T Y T F I F J K T R A W E R F D S F G B Y R E A H G J G N E E T F I F G R T W S R U S D Y T R E D H D E J H G V C Q E W E S H F S A E G T E Y O P D A S W A V R J L M D S I R U O F Y T F I F N E T N V V C Q E Y R H W Q R U O C B N Y E A C B D S P G T B C R W E F F T I L P I U T R G O X C B T R W E G E S V C X A S W E Y T J G O M V L H E Q F B K S A E H V C O G R T F A J N W R N R Q N E E T X I S D N E C U Y F B H E Y R D E W T U N I F G I Y T S N O R T U E N M I U E D D H M R F C N E S F V P I U E H B S X J E R D X V F L I U R T Y H F G B C K H E E S P H Y S I C A L V D S E R T C V Z P H Y S I C A L S I R U O F Y T Q E Y R H W Q R D S P G T B C R T R G O X C B T S W E Y T J G O A E H V C O G R N E E T X I S D R D E W T U N I S N O R T U E N L A C I M E H C T H G I E N R Q H E Y O R T N E E T F I F N E E T X I S E E R H T Y T F I F S E V E N T E E N R U O F Y T F I F
