Unit 2 Final Review

Is the following chemical or physical change? Folding a letter.

• Chemical
• Physical

Is the following chemical or physical change? Rusting of a bike.

• Chemical
• Physical

What is the atomic number of Fe?

What is the atomic mass, in amu, of this atom?

A ________ is a special kind of mixture where one substance dissolves in another.

The nucleus of an atom contains both ______ & _______.

• Protons
• Orbitals
• Atoms
• Neutrons
• Electrons

______ is a negatively charged ion.

• Electron
• Anion
• Cation
• Proton

_______ is a positively charged ion.

• Electron
• Anion
• Cation
• Proton

How many neutrons are in K-37?

How many protons are in C-14?