Atoms, Periodic Table, Elements & Compounds

Scientists were actually able to predict a great deal about the behavior and structure of the element, livermorium (Lv), before discovering it.  What most likely led to these predictions? 

• an understanding of the atoms used to create the new atoms 

• an understanding of the trends of the periodic table 

• an understanding of cell theory 

• an understanding of the other natural elements 

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The diagram shows part of the periodic table of the elements. Which pair of elements listed below has properties that are the most similar to each other? 

• Boron (B) and Carbon (C) 

• Krypton (Kr) and Xenon (Xe) 

• Phosphorus (P) and Aluminum (Al) 

• Arsenic (As) and Argon (Ar) 

The image shows a model of an atom.  What is found in the region of the atom that is indicated with the arrow? 

• neutrons and protons 

• electrons and protons 

• neutrons and electrons 

• protons, electrons, and neutrons 

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A portion of the periodic table of elements is shown.  What evidence would best support the claim that sulfur (S) and selenium (Se) have similar properties? 

• Their symbols (S and Se) are very similar to one another 

• Their atomic numbers are both less than 50 

• They are found in the same column of the table 

• The boxes representing these elements touch each other 

Water is formed when two hydrogen atoms bond to an oxygen atom. 

• a mixture 

• a complex 

• a compound 

• an element 

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Which part of the diagram represents the nucleus? 

• A

• B

• C

• D

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Which statement is accurate for these two sub-atomic particles?:  protons, neutrons

• they both have a neutral charge

• they both have a positive charge

• they are both located in the nucleus

• they are both located outside the nucleus

The chemical formula of glucose is C6H12O6, so it is classified as a(n) 

• Element 

• pure substance 

• Mixture 

• Solution 

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Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table.

Why are these elements in the same column in the periodic table?

• They have similar properties

• They have atoms of the same size

• They have the same number of protons

• They have the same number of neutrons

What atoms combine to make up a molecule of water, H₂O?

• 1 hydrogen, 1 oxygen

• 1 hydrogen, 2 oxygen

• 2 hydrogen, 1 oxygen

• 2 hydrogen, 2 oxygen

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