E6 2nd Period Exam Review

The ___________________ allows you to compare the elements and understand their properties. 

• Periodic table

• Atomic number

• Chemical symbol

• Element properties

The number of protons in an atom's nucleus gives us the...

• Element mass

• Atomic number

• Chemical symbol

• Element name

The nucleus of an atom has:

• Protons and neutrons

• Neutrons and electrons

• Electrons and protons

• Nothing

A pure substance made up of two or more elements that are chemically combined is a(n)...

• Compound

• Solution

• Element

• Mixture

A mixture that is unevenly mixed, so the different things that make it up are easily seen is called a...

• Homogeneous mixture

• Homogeneous solution

• Heterogeneous mixture

• Heterogeneous solution

Example of an element

• Pure gold

• Gold alloy

• Water

• Saltwater

The water in the stove is boiling 

• Physical Property 

• Chemical Property 

• Physical Change 

• Chemical Change 

Mixing a lemonade 

• Physical Property 

• Chemical Property 

• Physical Change 

• Chemical Change 

Hydrogen is a gas at room temperature

• Physical Property 

• Chemical Property 

• Physical Change 

• Chemical Change 

Sodium is a metal that can react with water 

• Physical Property 

• Chemical Property 

• Physical Change 

• Chemical Change