Law of conservation of mass

Front

What is the measure of the amount of matter?

Back

Mass

Front

If Bob puts 200 grams of ice into a pitcher with 900 grams of water, how many grams of water does he have after the ice melts?

Back

1,100 grams

Front

If a reaction starts with 20g of reactants, how much should it produce?

Back

20g of products

Front

Balance the equation: __P4 + __O2 --> __P2O3

Back

1, 3, 2

Front

What are the reactants in the reaction: 2Mg + O2 --> 2MgO?

Back

Mg and O

Front

What does the Law of Conservation of Mass state?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

How can you demonstrate the Law of Conservation of Mass with a simple experiment?

Back

By measuring the mass of reactants before and after a chemical reaction, the total mass should remain constant.

Front

What happens to the mass of ice when it melts in water?

Back

The mass remains the same; it is conserved.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.