Periodic Table and Reactivity Flashcard

Front

Which scientist is associated with the Plum Pudding Model?

Back

JJ Thomson

Front

What characteristic of sodium (Na) is responsible for its high reactivity?

Back

It has one valence electron.

Front

What is a horizontal row of elements in the periodic table called?

Back

Period

Front

Which element is classified as a metalloid?

Back

B

Front

What is a negatively charged subatomic particle located outside the nucleus called?

Back

Electron

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What do we call the vertical columns in the periodic table?

Back

Groups or families.

Front

What is the significance of valence electrons in chemical reactions?

Back

They determine how an element will react with others.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are dull, insulative, and brittle.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of the atom and stabilize the nucleus.