Chem - Intro to Balancing Equations - Day 2 Warm-Up

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

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

Back

Subscript

Front

To balance an equation you should:

Back

ONLY change coefficients.

Front

Balance this equation: _Mg + _Cl₂ --> _MgCl₂

Back

already balanced

Front

How many atoms are there TOTAL in: H₂SO₄

Back

7

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved.

Front

What is the purpose of balancing a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What happens if a chemical equation is not balanced?

Back

It violates the Law of Conservation of Mass.

Front

What is the difference between a reactant and a product?

Back

Reactants are substances that start a chemical reaction, while products are substances formed as a result of the reaction.