Law of Conservation of Mass ( Beefy)

Front

Law of Conservation of Mass

Back

Mass is never created or destroyed

Front

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have? Options: 4g, 5g, 9g, 14g

Back

4g

Front

The number in front of a compound or element is a

Back

Coefficient

Front

The number to the lower side of an element is a

Back

Subscript

Front

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

Back

Transformed, changed

Front

Which chemical equation is balanced? Options: CH₄+O₂------CO₂+2H₂O, H₂+O₂-----2H₂O₄, 4Al+3O₂-----2Al₂O₃

Back

4Al+3O₂-----2Al₂O₃

Front

How many oxygen atoms are in this chemical formula? Options: 6 oxygen atoms, 2 oxygen atoms, 3 oxygen atoms, 4 oxygen atoms

Back

6 oxygen atoms

Front

Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?

Back

1,100 g

Front

24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride

Back

62

Front

What is the law of conservation of mass?

Back

The mass of the reactants equals the mass of the products