Law of Conservation of Mass

Front

When is a chemical reaction balanced?

Back

Both sides have the same number of atoms

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

What is a precipitate?

Back

A solid that forms when two liquids are mixed.

Front

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

Back

a total of 20g of products

Front

Law of Conservation of Mass

Back

Mass is never created or destroyed

Front

When sodium and chlorine combine to form sodium chloride, sodium chloride is the: Originator, Reactant, Product, Produce

Back

Product

Front

Maria fills a bowl with 200 g of water and freezes it. What is the mass of the frozen water? Options: 50 g, 100 g, 200 g, 400 g

Back

200 g

Front

Does the equation H₂+O₂ →H₂O follow the Law of Conservation of Mass?

Back

No, because there are more atoms in the reactant.

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

How many grams of OXYGEN would be needed to show conservation of mass in the example below? Options: 100 g, 93 g, 7 g, 0 g

Back

7 g