Chemistry - Chapter 4 - Elements and the Periodic Table

Who gave the first definition of an element?

Who had triads on their periodic table?

An isotope is an atom of the same element which has a different number of _______________ in the nucleus than the others

Who passed electricity through compounds leading to the discovery of many elements?

Step 3 when using the mass spectrometer is ____________________.

Step 4 when using the mass spectrometer is ____________________.

Hydrogen has ____ isotopes.

Step 5 when using the mass spectrometer is ____________________.

Which of the following is an example of Dobereiner's Triads?

Carbon has ____ isotopes.

Step 1 when using the mass spectrometer is ____________________.

Who had octaves on their periodic table?

_______________ gave each element an atomic number.

Which of the following is true about Mendeleev?

Step 2 when using the mass spectrometer is ____________________.

Select the names of the scientists who are responsible for creating the periodic table...