Law of Conservation of Mass

Front

Law of Conservation of Mass

Back

Mass is never created or destroyed

Front

A + B -> C; A = 5g, C = 9g. Grams of B?

Back

4g

Front

Number in front of a compound/element is a:

Back

Coefficient

Front

Lower number of an element:

Back

Subscript

Front

Subscripts in 3Fe₂O₄

Back

2,4

Front

Coefficient in 3H₂O

Back

3

Front

Coefficient (3) in 3H₂O indicates how many _____________ are present.

Back

Molecules of Water

Front

Subscript (2) in 3H₂O indicates how many _____________ are present.

Back

Atoms of Hydrogen

Front

Nitrogen atoms in NH₃

Back

1

Front

Balanced Chemical Equation:

Back

4Al + 3O₂ → 2Al₂O₃