Chemical Reactions Review

Front

Which is an example of a balanced chemical equation?
Options: 3KClO₃ → 2KCl + 3O₂, 2KClO₃ → 2KCl + 3O₂, 2KClO₃ → 2KCl + O₂, 2KClO₃ → KCl + 3O₂

Back

2KClO₃ → 2KCl + 3O₂

Front

A(n) __ chemical equation has the same number of atoms of each element on both sides of the equation.

Back

balanced

Front

Input a coefficient in front of each chemical formula to balance the equation: Fe + O₂ → Fe₂O₃.

Back

4 Fe + 3 O₂ → 2 Fe₂O₃

Front

What does the symbol (s) represent in the following chemical equation? Sr (s) + 2H₂O(l) → Sr(OH)₂ (aq) + H₂ (g)

Back

solid

Front

What does the symbol (l) represent in the chemical equation Sr (s) + 2H₂O(l) → Sr(OH)₂ (aq) + H₂ (g)?

Back

liquid

Front

What does the symbol (aq) represent in the chemical equation? Sr (s) + 2H₂O(l) → Sr(OH)₂ (aq) + H₂ (g)

Back

aqueous (dissolved in water)

Front

What does the symbol (g) represent in the following chemical equation? Sr (s) + 2H₂O(l) → Sr(OH)₂ (aq) + H₂ (g)

Back

gas

Front

In chemical equations, ________________ represent the number of units of each substance taking part in the chemical reaction.

Back

coefficients

Front

When is a chemical equation balanced?

Back

The number of atoms of each element is the same on both sides of the equation.

Front

__ uses chemical formulas and symbols to describe a chemical reaction.

Back

A chemical equation