SCIENCE 2nd qrt

• He is an English Chemist and regarded that Atom is the smallest invisible component of matter?

  John Dalton
• Atoms are tiny sphere-shaped particles that can neither be?

  be created nor destroyed
• Atoms of an element are Identical in mass and chemical properties
• He is an English Physcist and experimented on deflections of the cathode rays in a electirc field and magnetic field?

  Joseph John Thomson
• Joseph John Thomson Discovered that the negatively charged are Electrons
• Thomson propsed that the atom is composed charged sphere with electrons evenly dispersed in it
• He is a British Physicist and his students Hans Geiger and Ernest Marsden wanted to test the plam pudding model was correct?

  Ernest Rutherford
• He is an English Psysicist and in 1932 he identified these neutral particles and collect them as neutrons?

  James Chadwick
• He is a Danish Psyicist and he used hydrogen atom, he proposed a theory that focuses on the electrons in an atom?

  Niels Bohr
• It is an electron can jump from low energy orbit to a high energy?

  Electrons excitation
• It is an electron can also jump from a high energy orbit to a low energy orbit and releases energy in the form of light, whose color depends on its wavelength?

  Electron de-excitation
• The forces of attraction that bonds these particles together are called?

  Chemical bonds
• in forming a chemical bonds, atoms tends to share, gain or lose, valence electrons to achieve a noble gas electron configuration
• Ionic bonds is the transfer or sharing of the electrons to one atom to another atom.
• A metal atom and a nonmetal atom form an ionic bond
• positive : cation, negative: anion
• the two nonmetal atoms share electrons and form a covalent bond.
• the covalently bonded atoms are also called molecular bond
• covalend bonds can be single, double, triple
• it pertains to compounds related to life and is often associated with the element carbon?

  Organic
• meth?

  1
• eth?

  2
• prop?

  3
• but?

  4
• pent?

  5
• hex?

  6
• hept?

  7
• oct?

  8
• non?

  9
• dec?

  10
• hydrocarbons with single covalent bond?

  alkanes
• what is the general formula of alkane?

  CnH2n+2
• it is double covalent bond?

  alkenes
• what is the general formula of alkenes?

  CnH2n
• triple covalent bond?

  alkynes
• what is the general formula of alkynes?

  CnH2n-2
• how many S have in SPDF?

  2
• how many P have in SPDF?

  6
• how many D have in SPDF?

  10
• how many F have in SPDF?

  14