Law of Conservation of Mass QuickCheck

Front

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

Back

Transformed, Changed

Front

If reaction starts with 20g of reactants, what is the total mass of products produced?

Back

a total of 20g of products

Front

The number in front of a compound or element is a

Back

Coefficient

Front

The coefficient in  3H₂O is

Back

3

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

Bob puts 200 grams of ice into a pitcher with 900 grams of water. How many grams of water does Bob now have in the pitcher?

Back

1,100 g

Front

________ are the starting substances in a chemical equation.

Back

Reactants

Front

What are the substances that are produced in a chemical reaction?

Back

Product

Front

According to the law of conservation of mass, how much mercury was present in the mercury (II) oxide? Options: 55.8 g, 64.2 g, 60.0 g, 126.0 g

Back

55.8 g

Front

6.1 g + ? g = 9.1 g

Back

3 g