Unit 4 - Writing Chemical Equations

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What is the unbalanced equation for the reaction of potassium iodide and lead(II) nitrate?

Back

KI + Pb(NO3)2 → PbI2 + KNO3

Front

What gas is produced when nitric acid reacts with calcium?

Back

Hydrogen gas is produced when nitric acid reacts with calcium.

Front

What is the product of the reaction between sulfuric acid and magnesium?

Back

The products are magnesium sulfate and hydrogen gas.

Front

How do you write the formula for sodium chloride?

Back

The formula for sodium chloride is NaCl.

Front

What is the balanced equation for sodium reacting with chlorine?

Back

2Na(s) + Cl2(g) → 2NaCl(s)