Balancing chemical equations

Front

Law of Conservation of Mass

Back

It states that no matter can be created or destroyed.

Front

What does the 2 represent in the following chemical equation: 2Na₃?

Back

coefficient

Front

Which equation best represents the law of conservation of mass? Options: A, B, C, D

Back

C

Front

Which of the following is a balanced chemical equation? 1) H₂ + O₂ ---> H₂O 2) 2H₂ + O₂ ---> 2H₂O 3) H₂ + 2O₂ ---> H₂O

Back

2H₂ + O₂ ---> 2H₂O

Front

What is the left part of a chemical equation called? 2H₂ + O₂ ---> 2H₂O

Back

Reactants

Front

What is the right part of a chemical equation called? 2H₂ + O₂ ---> 2H₂O

Back

Products

Front

What is the little number after an element in a chemical equation called? Example: H₂

Back

Subscript

Front

What does the arrow (--->) in a chemical equation signify?

Back

Yields

Front

Is the following equation balanced? 4Al + 3O₂ ---> 2Al₂O₃

Back

YES

Front

Is the following equation balanced? 2CH₂ + 2O₂ ---> 2CO₂ + 2H₂

Back

YES