Chemistry Flashcard

Front

What is the smallest unit to take part in a chemical reaction?

Back

Molecules

Front

Which particle orbits the nucleus of an atom?

Back

Electron

Front

Why are isotopes important in the medical field?

Back

They help in diagnosing and treating diseases

Front

What is a characteristic of isotopes of the same element?

Back

They have different physical properties

Front

Which element is represented by the symbol 'Pb'?

Back

Lead

Front

What do elements in the same column (group) have in common?

Back

They react similarly with other elements

Front

Valance electron

Back

Electron in the outermost shell

Front

What is the element name for the symbol 'O'?

Back

Oxygen

Front

Identify the molecule from the options: O3, NH4, NaCl, CO2

Back

O3

Front

What makes noble gases so unreactive?

Back

Full outer shell of electrons