Changes of Matter

How do you know matter has changed?

• The matter stays the same.
• New material is formed. 
• The matter gets more massive.
• The matter gets less massive. 

Which process results in a permanent change to matter?

• A haircut
• Breaking a graham cracker
• An apple that has turned brown and smells bad
• Ice melting

Alex baked a batch of cookies. When the cookies came out of the oven, Alex noticed that color of the cookies had changed. They smelled different than the raw cookie dough. The raw cookie dough was sticky and soft and the baked cookies are dry and firm. What kind of change has taken place in the cookies?

• Chemical change- decaying
• Chemical change- cooking
• Physical change- cooking
• Physical change- breaking

Aaron and Dash fill two beakers up with water. Aaron covers his beaker with a lid and leaves it on his desk. Dash leaves his beaker uncovered and next to the heater. The next day, Aaron's beaker has 100 mL of water. Dash's beaker only contains 50 mL of water. What are two reasons why the amount of water in the two beakers is different. 

• The uncovered beaker was near heat and evaporated
• Dash poured some of his water out
• The uncovered beaker's water changed to its solid state

Which of the following sports uses water it its solid state?

• Water skiiing
• Conoeing
• Ice Hockey
• Swimming