Quiz about Law of Conservation of Mass

Question 1

If 10 grams of water are added to 5 grams of salt, how much salt water will be made?

Accepted Answer

15 grams

Answer

2 grams

Answer

5 grams

Answer

10 grams

Question 2

A rock weighing 60 g is broken into 2 pieces. What are possible weights for the two pieces of rock?

Accepted Answer

30 g and 30 g

Answer

20 g and 20 g

Answer

30 g and 20 g

Answer

45 g and 10 g

Question 3

Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 10 crayons that weighed 5 grams each. What is most likely the weight of her artwork?

Accepted Answer

50 grams

Answer

4 grams

Answer

20 grams

Answer

100 grams

Question 4

Leslie places 5 pounds of ice in a 1 pound bucket with a lid. The next day, she notices all the ice has melted. When she weighs the bucket with the melted ice, what will itmost likely weigh?

Accepted Answer

6 pounds

Answer

4 pounds

Answer

7 pounds

Answer

5 pounds

Question 5

Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed?

Accepted Answer

600 g of salt and 600 g of water

Answer

900 g of salt and 200 g of water

Answer

1,200 g of salt and 1,200 g of water

Answer

700 g of salt and 5,000 g of water

Question 6

Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?

Accepted Answer

200 g

Answer

50 g

Answer

100 g

Answer

400 g

Question 7

A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?

Accepted Answer

233 grams

Answer

3 grams

Answer

200 grams

Answer

230 grams

Question 8

A jeweler melts gold to make jewelry. As the gold melts, the mass

Accepted Answer

stays the same

Answer

increases

Answer

decreases

Answer

is destroyed

Question 9

Two kilograms of water are placed in a closed container. The container is placed in the freezer, and after a few hours it turns into ice. Which is most likely the mass of the ice?

Accepted Answer

2.0 kilograms

Answer

1.0 kilogram

Answer

1.5 kilograms

Answer

2.5 kilograms

Question 10

A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. The solution weighs...

Accepted Answer

380 grams

Answer

250 grams

Answer

375 grams

Answer

400 grams

Question 11

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

Accepted Answer

Transformed, changed

Answer

Destroyed a little bit

Answer

Invisible

Answer

None of the above

Question 12

Which of these is not a chemical reaction?

Accepted Answer

Melting of ice

Answer

Burning of wood

Answer

Milk going bad

Answer

Mixing vinegar and baking soda

Question 13

What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?

Accepted Answer

They both will weigh the same

Answer

The product always weighs more than the reactant

Answer

The reactant will weigh more than the product

Answer

They both will loose mass after the reaction

Question 14

Jamie weighs a glass of water and observes its weight to be 12 ounces. Jamie then adds 6 ice cubes to the glass of water. Each ice cube weighs one ounce. After all of the ice cubes have melted, what will be theapproximate weight of the glass of water?

Accepted Answer

18 ounces

Answer

6

Answer

12

Question 15

The Law of Conservation of Mass States

Accepted Answer

Mass cannot be created nor destroyed, it can only change form.

Answer

Energy cannot be created nor destroyed, it can only change form.

Answer

Mass can be created or destroyed, it cannot change form.

Law of Conservation of Mass

15 questions

If 10 grams of water are added to 5 grams of salt, how much salt water will be made?

A rock weighing 60 g is broken into 2 pieces. What are possible weights for the two pieces of rock?

Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 10 crayons that weighed 5 grams each. What is most likely the weight of her artwork?

Leslie places 5 pounds of ice in a 1 pound bucket with a lid. The next day, she notices all the ice has melted. When she weighs the bucket with the melted ice, what will itmost likely weigh?

Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed?

Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?

A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?

A jeweler melts gold to make jewelry. As the gold melts, the mass

Two kilograms of water are placed in a closed container. The container is placed in the freezer, and after a few hours it turns into ice. Which is most likely the mass of the ice?

A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. The solution weighs...

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