The water in the cake batter evaporates

The cake rises as gas bubbles form in the baking cake

The cake takes the shape of the container in which it is baked

The water in the cake batter is used to keep the cake moist as it bakes

Procedure 1: All the reactants were liquids that evaporated.

Procedure 2: A gas was formed as one product, and it escaped into the air.

Procedure 1: One of the reactants was converted to thermal energy.

Procedure 2: All the products were liquids.

Procedure 1: The reactants were liquids with different densities.

Procedures 2: The reactants were combined into only one product.

Procedure 1: One of the products was a gas that escaped into the air.

Procedure 2: A gas from the air reacted with one of the other reactants.

No, because the metal strip was still visible

Yes, because a new material of a different color formed on part of the metal strip

No, because the solution stayed blue

Yes, because the volume of the blue solution stayed the same

A gas is present

The total number of atoms remains unchanged.

The state of matter remains the same.

A brown gas is produced.

6.03

6

50

49.97

2C₂H₂ + 5O₂ ---> 4CO₂ + 2H₂O

4Fe + 3O₂ ---> 2Fe₂O₃

NaHCO₃ ---> Na₂CO₃ + H₂O + CO₂

It states that matter cannot be created or destroyed.

It states that energy cannot be created or destroyed.

It states that matter can be created or destroyed.

It states that sound can be created or destroyed.

Reactants

Products 

Yields 

Chemical Equation 

Reactants

Products 

Yields 

Chemical Equation 

3

6

12

24

1

12

6

6

5

7

3