Midterm Exam Review

Change that affects the composition of the material

• Physical Change
• Chemical  change

change that affects the appearance or shape, not the composition

• Physical Change
• Chemical Change

Property that tells how matter can be changed into something new and brand new

• Physical Property
• Chemical Property

Property that is measurable and can be observed without changing the object

• Physical Property
• Chemical Property

How do you calculate the density of a marble?

• 3.14 x the radius squared
• measure it on a balance to see how many grams
• drop it in a graduated cylinder of water for displacement
• measure it with a spring scale to see how many newtons

Your bicycle rusts in the rain...why?

• It reacts with the oxygen
• It reacts with iron
• It is malleable
• Radioactivity

You get the mass and volume of the object.  You can calculate what?

• Volume
• Density
• Acceleration
• Speed

All of the following are ways you can tell a chemical change occurred EXCEPT

• color
• fizzing/foaming
• light production
• state of matter change

All of the following are chemical changes except...

• The bicycle rusts
• The house burned
• The salt dissolved
• Salt reacts with chlorine

I fried an egg on the stove.  Physical or chemical?

• Physical
• Chemical