Chemistry Assessment #3

What are properties?

• Characteristics that are specific to a certain substance
• Things that help distinguish one substance from another
• Remain the same regardless of sample size
• all of these

What happens to atoms during a chemical reaction?

• Some atoms are destroyed and some remain the same.
• They atoms of the reactants are rearranged to form the products.
• Stay put and do not rearrange.
• New atoms are created.

Iron + Oxygen ----> Iron Oxide
What are the reactants?

• Iron Oxide
• Iron and Oxygen

aluminum + copper chloride ----> copper + aluminum chloride

Name the product(s) in the reaction.

(Scientific Principle #10)

• Aluminum and copper chloride

• Copper and Aluminum Chloride

• Aluminum and Copper

• There are no products

Iron + Oxygen ----> Iron Oxide
What are the products?

• Iron and Oxygen
• Iron Oxide

What can we test to determine if two substances are the same or different?

• Properties
• Mass
• Volume
• Temperature

Is melting an ice cube a chemical or physical change?

• Chemical Change
• Physical Change (phase change)

Is burning Magnesium a chemical or physical change?

• Chemical Change
• Physical Change

Is making chocolate milk a chemical change or a physical change?

• Chemical Change
• Physical Change (mixture)

Is it a chemical or physical change when acid rain reacts with copper?

• Chemical change
• Physical Change