Unit 3 Review

Is burning wood a chemical or physical change?

• chemical
• physical

Which is an example of a chemical change?

• 
• 
• 
• 

Which is an example of chemical property?

• color

• flammability

• shape

• size

Which is an example of physical property?

• color

• flammability

• reactivity

• toxicity

Josh decided to mix some vinegar with baking soda. He knew that a reaction occurred because he made careful observations. He noted that the mixture started to foam up and bubble, and it was white in color. How did Josh know that a chemical reaction occurred?

He was sure a reaction occurred because of

• the color of the mixture

• the smell of the vinegar

• the volume of the mixture

• the formation of a gas

a change in a substance that does not involve a change in the identity of the substance

• Physical change

• Chemical Change

Where are the metals located on the periodic table?

• The left

• The right

• Only at the bottom

• Only at the top

a change in which one or more substances are converted into different substances

• physica change

• chemical change

Which of the following is NOT a physical change?

• Crushing a can

• boiling water

• shredding paper

• burning paper

the starting materials in a chemical reaction

• Products
• Reactants
• Starters
• Enders