Front

Which part of the atom has the most mass?

Back

nucleus

Front

The proton has a ___________________ charge.

Back

positive

Front

The atomic number is the number of __________ in an atom.

Back

protons

Front

What is the atomic number of Calcium?

Back

20

Front

What is the chemical symbol for Caesium?

Back

Cs

Front

What does this diagram show us?

Back

an isotope

Front

What are these atoms called?

Back

ions

Front

What do we call this? Options: an isotope, a positive ion, a negative ion

Back

a change of element