Law of Conservation of Mass

Front

Matter can not be created nor destroyed: it can only be

Back

Transformed, changed

Front

What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete? Options: They both will weigh the same, The product always weighs more than the reactant, The reactant will weigh more than the product, They both will lose mass after the reaction.

Back

They both will weigh the same

Front

This type of system allows matter to flow freely in and out...

Back

Open System

Front

A boiling pot with a lid on it to keep in the energy is what type of system?

Back

Closed System

Front

Law of Conservation of Mass

Back

Mass is never created or destroyed

Front

Since gasses weigh nothing, when they are produced in a reaction they do not have to be accounted for.

Back

False

Front

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B have? Options: 4g, 5g, 9g, 14g

Back

4g

Front

Which of these is not a chemical reaction? Options: Burning of wood, Milk going bad, Mixing vinegar and baking soda, Melting of ice

Back

Melting of ice

Front

According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?

Back

The atoms in the wood and oxygen rearrange and form smoke and ash.

Front

Measure of the amount of matter

Back

mass