A student drew atomic models of four elements.
Based on these drawings, which element is the most reactive?
A student drew atomic models of four elements.
Based on these drawings, which element is the most reactive?
This is Unit 1 covers 8.5 A-C: atomic strucutre, protons are identity, valence electrons and reactivity, and trends in the Periodic Table.
You will START by Labeling your Periodic Table Cheat Sheet.. Once you have completed that--> Begin your test.
A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material?
Which pair of elements has reactivity that is similar to aluminum, Al?
Which pair of elements are metals, and solid at room temperature and standard atmosphere pressure?
One of the properties that makes Silicon, Si, useful for building circuit boards that go in computers and phones is that it is a semi-conductor for electricity. Which other element is most likely able to be used as a semi-conductor of electricity?
A scientist performs tests on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample when pressure is applied to it.
Based on this information, the element could NOT be a member of which group on the periodic table?
A student drew atomic models of four elements.
Based on these drawings, which element is the most reactive?
Which statement accurately describes the atoms of a specific element?
Four students were asked to complete a table for a science assignment. Each student selected one chemical element from each of four groups in the periodic table and then classified each element as a metal, a nonmetal, or a metalloid.
Which table was completed correctly?
Which pair of properties describes the elements in Group 18?
A chemist made the table below to record some atomic properties of four elements.
Based on the table above, identify which element is the MOST reactive and explain why.
What is the total number of protons, neutrons, and electrons in an antimony, Sb, atom that has a mass number of 122?
What is the difference between the number of electrons in an atom of palladium, Pd, and the number of electrons in an atom of iron, Fe?
Mercury, Hg, is a heavy, silvery-white metal. It is a rather poor conductor of hear, but good conductor of electricity. It has a very low freezing point, which makes it a liquid at room temperature. Mercury is used in thermometers, baraometers, and fluorescent lamps. Which statement accurately describes atoms of mercury?
Element R and Element Q have the same number of valence electrons. These elements both have similar chemical behavior, but Element R has fewer energy levels than Element Q
Which statement best describes the positions of the two elements in the periodic table?
Students in a science class prepared flash cards so that they could quiz one another about the arrangement of the periodic table. One of the flash cards contained information about two elements, Element L and Element M.
The students had to use the information on the flash card to determine possible positions of the two elements on a blank periodic table. Which periodic table has the elements placed in locations that match the information on the flash card?
Based on their placement on the periodic table, compare an atom of Phosphorus, P, to an atom of sodium, Na. Make sure to use specific details. Consider: Groups/Periods, Metal/nonmetal/metalloid, reactivity, chemical properties, atomic structure.
