Elements of the Periodic Table Names and Symbols

What does the number in each element's box represent on the Periodic Table?

• The number of protons in the nucleus

• The number of molecules

• The number of atoms in a molecule

• The molecule's atomic mass

What is the element with the chemical symbol (K).

• Argon

• Silicon

• Potassium

• Phosphorus

What is this image representing

?

• The atomic mass

• The atomic number

• The periodic table

• No one of the above

it is located alone in the upper left corner of the periodic table, has the simplest atoms , it is rarely found on earth as a pure element, this element makes up most of the sun.

• Hydrogen

• Hologens

• The noble gases

• Helium

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NGSS.MS-PS1-1

........................ is a nonmetal that does not fall into a family because it`s chemical properties are very different from other elements also it is the simplest elements ( it contains 1 proton and 1 electron).

• Hydrogen

• Hologens

• The noble gases

• Helium

What is the name of this group?

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NGSS.MS-PS1-1

Some of the newly discovered elements do not yet have permanent names or symbols but in the future scientists will leave them without any names or symbols .

• True

• False

An element`s properties can be predicted by its location on the periodic table

• True

• False

Which of the following elements is in the same period as phosphorus?

• carbon

• magnesium

• nitrogen

• oxygen

Four new elements have been added to the modern periodic table as of 2016, thereby completing the 7th period. Which one is element 115?

• Nihonium (Nh)

• Moscovium (Mc)

• Tennessine (Ts)

• Oganesson (Og)