Sunday, November 5, 2017

Chemical Reaction Quiz


2. Marco 
The student is able to distinguish between physical change and
chemical reaction

          1.Marco tears a piece of notebook paper into smaller pieces, tearing paper into
pieces  pieces is an example of what kind of change?

             2. Which process is an example of a physical change?
         
A. burning

B. rusting
.
 C.flattening


3. Chemical changes result in new substances, but physical changes do not. Which process is an example of a chemical change?

A.
baking a cake
B.
chopping a tree 
C.
heating a cup of tea

4.
Which observation is a sign of a chemical change?

A.
A rotting potato gives off a bad smell.
B.
A melting block of ice leaves a large puddle.
C.
A cloud changes shape when blown by wind.
D.
A plaster statue breaks when it falls onto the floor.


                     5. There are several differences between chemical and physical changes. Which process is an example of a chemical change?

A.
steam rising from a boiling pot of soup
B.
a metal railing rusting in damp weather
C.
alcohol evaporating from a cotton swab
D.
a piece of wood shrinking as it dries out