WorksheetsBell Ringer 3-7-24
Total questions: 9
Worksheet time: 5mins
What does the Law of Conservation of Mass state?
The mass of products is always less than the mass of reactants.
The mass of reactants is always less than the mass of products.
Matter can be created and destroyed in a chemical reaction.
Matter can neither be created nor destroyed in a chemical reaction.
According to the Law of Conservation of Mass, in a closed system, the mass of the reactants compared to the mass of the products is:
Greater than the mass of the products
Less than the mass of the products
Equal to the mass of the products
Unpredictable without further information
In a chemical reaction, if the total mass of the reactants is 100g, what is the total mass of the products?
Less than 100g
More than 100g
100g
Cannot be determined without knowing the reactants
Which of the following is a correct interpretation of the Law of Conservation of Mass?
The total mass in an isolated system can change during a chemical reaction.
The mass of the products in a chemical reaction can be different from the mass of the reactants if energy is absorbed.
The mass of the products in a chemical reaction is always equal to the mass of the reactants.
Mass can be created during a chemical reaction if the conditions are right.
When 50g of sodium reacts with 35g of chlorine, the total mass of the sodium chloride produced will be:
85g
Less than 85g
More than 85g
Cannot be determined without more information
According to the procedures in "The Law of Conservation of Mass in a Chemical Reaction" OLABS, which of the following are the REACTANTS in the lab?
BaCl2
Na2SO4
BaSO4
NaCl
Name the molecule BaCl2
dibarium chloride
barium sulfate
barium chloride
barium trichloride
Name the molecule Na2SO4
sodium chloride
sodium sulphate
sodium tetrasulfide
disodium disulfate
According to the procedures in "The Law of Conservation of Mass in a Chemical Reaction" OLABS, which of the following are the PRODUCTS in the lab?
BaCl2
Na2SO4
BaSO4
NaCl
