Midterm 1 -T2 Revision

.................. change that produces new substance.

• Physical

• Chemical

............................ law that states that the total mass does not change before or after chemical/physical change.

• chemical reaction

• conservation of matter

Breaking phone is an example of ........

• physical change

• chemical change

When iron reacts with ................. it forms ................. that considered to be .................change.

• oxygen- copper oxide- physical

• oxygen-iron oxide-physical change

• carbon dioxide- iron oxide- chemical change

• oxygen- iron oxide -chemical change

Baking cake is ,............. change

• chemical

• physical

Iron rusting is a ................

• chemical reaction

• physical change

Nails made of ........... that looks ..........when it is new.

• copper- shiny

• Iron-rusted

• copper -rusted

• iron-shiny

Cheese formation and bacterial modifications is ............ change.

• physical

• chemical

copper's color changes to .............. when it is rusted.

• blue

• red

• yellow

• green

The chemical reaction starts with................. that gives ............. at the end.

• reactants-products

• products-reactants