Chemistry - Word Equations warm up

Front

What is a word equation in chemistry?

Back

A word equation is a way of representing a chemical reaction using the names of the reactants and products instead of chemical formulas.

Front

What are the products of the reaction between sodium and chlorine?

Back

Sodium chloride (NaCl) is the product formed when sodium reacts with chlorine.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change involves a change in physical properties without altering the chemical composition, while a chemical change results in the formation of new substances with different chemical properties.

Front

What are the reactants in the word equation for photosynthesis?

Back

Carbon dioxide (CO2) and water (H2O) are the reactants in the word equation for photosynthesis.

Front

What is the correct word equation for the reaction of magnesium with oxygen?

Back

Magnesium + Oxygen → Magnesium oxide.

Front

What symbol is commonly used to indicate that a chemical reaction has occurred?

Back

The arrow (→) is used to indicate that a chemical reaction has occurred, showing the direction of the reaction from reactants to products.

Front

What is the role of reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change to form products.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, ensuring the law of conservation of mass is followed.

Front

What does the term 'yield' refer to in a chemical reaction?

Back

Yield refers to the amount of product formed in a chemical reaction, often expressed as a percentage of the theoretical maximum.

Front

What is the significance of the law of conservation of mass in chemical reactions?

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.