Compounds and Mixtures

In a mixture, substances 

• keep their properties
• have a definite chemical composition
• lose their properties
• combine chemically 

Water is an example of 

• element
• compound
• mixture
• an ion 

A molecule of sugar contains carbon and 

• hydrogen
• oxygen
• sodium
• hydrogen and oxygen 

Ions that repeat in a regular pattern form a 

• structural formula 
• compound
• crystal lattice 
• mixture 

Organic compounds used to build and repair the body are 

• proteins
• cholesterol
• carbohydrates
• lipids 

Organic compounds contain the element

• hydrogen
• carbon
• oxygen
• nitrogen

In a covalent bond, electrons are 

• gained
• lost
• traded
• transferred

Two or more substances that have been combined but not chemically changed makeup 

• mixture
• element
• compound
• ion 

An ion is formed when an atom gains or loses 

• a neturon
• an electron
• a proton
• a neutron or proton 

A molecule of water contains two hydrogen atoms joined to one 

• nitrogen atom
• carbon atom
• sodium atom
• oxygen atom