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atomos:It is a Greek word which means “indivisible”.
Democritus:He proposed the idea that if matter was to be divided, the result would be very hard and indivisible particles.
Dalton:He was the first to coin the word “atom”.
Thomson:Who discovered electrons?
proton:It is a positive particle with a mass much greater than that of an electron.
nucleus:It is a small region in an atom where protons are concentrated.
nuclear:How do we call Rutherford’s model of an atom?
planetary:It is Bohr’s model of atom patterned from the motion of planets around the sun.
copper:It is the element that gives a green color when subjected to flame.
neutron:It is the third sub-atomic particle with the approximate atomic mass unit of 1.
atomic number:It refers to the number of protons in the nucleus of the atom of an element.
mass spectrometer:It is an instrument used to determining the mass of an element.
isotopes:They are atoms of an element having the same number of protons but different in the number of neutrons.
quantum:It is the amount of energy required to move an electron from its present level to the next higher level.
electron cloud:It is a fuzzy cloud region where the probability of finding electrons is high.
clover:D orbitals are shaped like a _________________.
quantum:Principal __________________ number refers to the major or principal energy level in an atom.
electronic configuration:It is a way in which electrons are arranged around the nucleus of an atom.
aufbau:It is a principle which states that electrons are added one by one to the nucleus to build up the elements.
stibnum:What is Antimony’s Latin name?
bromos:It is a Greek word which means “stench”.
Moseley:He is a British physicist who arranged the elements according to the increasing atomic number.
noble gases:They are the most stable group that can be found at the extreme right of the periodic table.
periodic law:It is a law which states that when elements are arranged according to their increasing atomic number, there is recurrence in their physical and chemical properties.
transition:They are metals whose outermost sublevels and nearby d sublevels contain electrons.
matter:It is consists of tiny and indestructible particles called atoms.
Chadwick:Who discovered neutron?
Schrodinger:He is the proponent of the quantum mechanical model.
periods:These are the horizontal rows in the periodic table.
valence electron:It is the outermost electrons in the outermost energy level.
Across:1. | They are metals whose outermost sublevels and nearby d sublevels contain electrons. | 3. | He is the proponent of the quantum mechanical model. | 7. | What is Antimony’s Latin name? | 8. | It is the amount of energy required to move an electron from its present level to the next higher level. | 10. | It is consists of tiny and indestructible particles called atoms. | 12. | It is a Greek word which means “stench”. | 17. | Who discovered electrons? | 19. | It is a positive particle with a mass much greater than that of an electron. |
| 20. | He was the first to coin the word “atom”. | 21. | It is a small region in an atom where protons are concentrated. | 23. | Principal __________________ number refers to the major or principal energy level in an atom. | 25. | It is a principle which states that electrons are added one by one to the nucleus to build up the elements. | 26. | It is Bohr’s model of atom patterned from the motion of planets around the sun. | 27. | They are atoms of an element having the same number of protons but different in the number of neutrons. | 28. | It is a law which states that when elements are arranged according to their increasing atomic number, there is recurrence in their physical and chemical properties. |
| | Down:2. | They are the most stable group that can be found at the extreme right of the periodic table. | 4. | Who discovered neutron? | 5. | It is a way in which electrons are arranged around the nucleus of an atom. | 6. | It is the third sub-atomic particle with the approximate atomic mass unit of 1. | 9. | It is an instrument used to determining the mass of an element. | 11. | It is a fuzzy cloud region where the probability of finding electrons is high. | 13. | He proposed the idea that if matter was to be divided, the result would be very hard and indivisible particles. |
| 14. | It is a Greek word which means “indivisible”. | 15. | He is a British physicist who arranged the elements according to the increasing atomic number. | 16. | It is the element that gives a green color when subjected to flame. | 18. | How do we call Rutherford’s model of an atom? | 22. | D orbitals are shaped like a _________________. | 24. | It refers to the number of protons in the nucleus of the atom of an element. | 26. | These are the horizontal rows in the periodic table. |
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Across:1. | They are metals whose outermost sublevels and nearby d sublevels contain electrons. | 3. | He is the proponent of the quantum mechanical model. | 7. | What is Antimony’s Latin name? | 8. | It is the amount of energy required to move an electron from its present level to the next higher level. | 10. | It is consists of tiny and indestructible particles called atoms. | 12. | It is a Greek word which means “stench”. | 17. | Who discovered electrons? | 19. | It is a positive particle with a mass much greater than that of an electron. |
| 20. | He was the first to coin the word “atom”. | 21. | It is a small region in an atom where protons are concentrated. | 23. | Principal __________________ number refers to the major or principal energy level in an atom. | 25. | It is a principle which states that electrons are added one by one to the nucleus to build up the elements. | 26. | It is Bohr’s model of atom patterned from the motion of planets around the sun. | 27. | They are atoms of an element having the same number of protons but different in the number of neutrons. | 28. | It is a law which states that when elements are arranged according to their increasing atomic number, there is recurrence in their physical and chemical properties. |
| | Down:2. | They are the most stable group that can be found at the extreme right of the periodic table. | 4. | Who discovered neutron? | 5. | It is a way in which electrons are arranged around the nucleus of an atom. | 6. | It is the third sub-atomic particle with the approximate atomic mass unit of 1. | 9. | It is an instrument used to determining the mass of an element. | 11. | It is a fuzzy cloud region where the probability of finding electrons is high. | 13. | He proposed the idea that if matter was to be divided, the result would be very hard and indivisible particles. |
| 14. | It is a Greek word which means “indivisible”. | 15. | He is a British physicist who arranged the elements according to the increasing atomic number. | 16. | It is the element that gives a green color when subjected to flame. | 18. | How do we call Rutherford’s model of an atom? | 22. | D orbitals are shaped like a _________________. | 24. | It refers to the number of protons in the nucleus of the atom of an element. | 26. | These are the horizontal rows in the periodic table. |
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© 2012
PuzzleFast.com, Noncommercial Use Only