Transcript
The Periodic TableClicker Review
• The usefulness of Mendeleev’s periodic table was confirmed by– A. The discovery of subatomic particles– B. its immediate acceptance by other
scientists– C. the discovery of elements with predicted
properties– D. The discovery of the nucleus
• Moving from left to right across a row the periodic table, which of the following values increase by exactly one from element to element?– A. isotope number– B. atomic number– C. atomic mass– D. atomic mass unit
• Which list of elements contains only metals?– A. carbon, iodine, tin– B. tin copper, cesium– C. Helium, iron, copper– D. iodine, carbon, argon
• Which statement does NOT apply to metals– A. most metals are ductile– B. most metals are malleable– C. most metals are brittle– D. most metals are good conductors of heat
and electricity
• The tendency of an element to react is closely related to– A. its atomic mass– B. attractions between its atoms– C. the number of valence electrons– D. the ratio of protons to neutrons
• As you move from left to right across a period, the number of valence electrons– A. increases– B. stays the same– C. increases and then decreases– D. decreases
• Which statement is NOT true about the elements flourine, chlorine, and iodine?– A. they are all halogens– B. they react easily with metals– C. they are similar to noble glases.– D. They are all nonmetals.
• Which of the following Group 1A elements is the most reactive?– A. Cs – B. Li– C. K– D. Na
• Among the alkali metals, the tendency to react with other substances– A. does not vary among the members– B. increases from top to bottom– C. varies in an unpredictable way– D. decreases from top to bottom
• Which of the following gases emit colors when an electric current is applied?– A. Hydrogen and helium– B. Argon and Krypton– C. Flourine and Chlorine– D. oxygen and nitrogen
• To keep them from reacting, some highly reactive elements are stored in– A. water– B. pure oxygen– C. liquid mercury– D. argon gas
• Two highly reactive elements in Period 2 are the metal lithium and the– A. metalloid arsenic– B. nonmetal selenium– C. nonmetal fluorine– D. nonmetal krypton
• Which element is found in nature only in compounds?– A. sodium– B. oxygen– C. helium– D. nitrogen
• The atomic mass of an element is– A. the sum of the protons and neutrons in one
atom of the element– B. twice the number of protons in one atom of
the element– C. a ratio based on the mass of a carbon-12
atom– D. a weighted average of the masses of an
element’s isotope.
• Which element is found in most of the compounds in your body except for water?– A. iodine– B. potassium– C. iron– D. carbon
• Mendeleev arranged the known chemical elements in a table according to increasing– A. atomic number– B. number of electrons– C. number of protons– D. mass
• In a periodic table, a set of properties repeats from– A. element to element– B. group to group– C. column to column– D. row to row
• Describe the similarities and differences between group 1A and 2A.
• Circle and identify the areas of the periodic table that are most reactive and least reactive.
• How are Potassium (K) and Argon (A) different from each other? What is this difference due too?
• What group of elements would you use to surround an alkali metal to prevent it from violently reacting?
• What happens when you move across a period?
• What happens as you move down a group?
• Table salt is Sodium Chloride (NaCl). Which element is the alkali metal and which element is the halogen.
• How did Mendeleev organize the elements in the periodic table?
Use and arrow and point to the:
Symbol:
Element name:
Atomic Number:
Atomic Mass:
• Circle and label a period and a group
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