PERIODIC TABLE CHEMISTRY TEST CHAPTER 6 FULL

Dmitri Mendeleev (1834-1907AD) Rearrange the elements in order of increasing atomic mass Group them according to their similar chemical properties Success to predict the undiscovered elements !! Ħ. Lother Meyer (1830-1895AD) Plotted a graph of atomic volume against atomic mass Successful in showing similar chemical properties form a periodic pattern against their atomic mass ĥ. John Newlands (1837-1898AD) classified the 56 established elements into 11 groups based on physical properties Discover that elements with similar properties repeated every 8 elements LAW OF OCTAVES Ĥ. Johann Dobereiner (1780-1849AD) In 1829, divided the element into three groups with similar properties Give the idea that there was a relationship between chemical properties with atomic mass ģ. Antoine Lavoisier (1743-1794AD) First scientist to classify substances Classify them including light & heat into metals and nonmetals Failed Reason: light & heat are not element Ģ. Who began the discovery of periodic table ?ġ. Yes! They’re arranged in periodic table But remember, periodic table was formed in many years and developed by a few chemist in different ways. So can you guess how these elements been arranged in order to let us easier to recognise them? Scientist had discover hundreds types of elements in this earth.

PERIODIC TABLE CHEMISTRY TEST CHAPTER 6 FULL

Rules: - Winner in every round could earn 15 points - You can refer to elements list while writing symbol - You must state the full name of elements while playing - Those who can state full name of elements in whole one game could earn 5 points - The final winner is those who earn 50 pointsĬl Sn Na Br Fe Zn K Ag Pb Mg H He Ar Cu Al Be N B P I Ne Si Ca S O Ca compounds are used for making cement, bleaching powders, plaster of Paris, etc.

Na bicarbonate is used for baking, in medicines, etc. Na compounds are used for making soaps, washing soda and detergents. Zn is used for galvanizing iron to protect Fe from rusting.

Fe, Al, Cu metals are used to make utensils used for cooking. Cu, Al pure metals in the form of wires are used for carrying electrical currents. Why we learn elements? Are they important to us? Let’s take a look for the uses of some elements !!ġ. You have learn that our earth consist of many types of elements Can you give some examples of element? Yes! Oxygen,carbon, zinc, aluminium, helium… all these are elements

Periodic table chemistry test chapter 6