Introduction to Word Equations
A Grade 6 science worksheet introducing students to the concept of word equations in chemistry, covering reactants, products, and basic examples.
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Introduction to Word Equations
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Read each question carefully and answer to the best of your ability. This worksheet will test your understanding of word equations, reactants, and products.
In chemistry, a word equation is a way to describe a chemical reaction using the names of the substances involved. The substances you start with are called **reactants**, and the new substances formed are called **products**. An arrow (→) separates the reactants from the products, and it means 'produces' or 'yields'.
Example: Hydrogen + Oxygen → Water
1. In a word equation, the substances you start with are called .
2. The new substances formed in a chemical reaction are called .
3. The arrow in a word equation means ' ' or 'yields'.
4. When wood burns, it combines with oxygen to produce ash and carbon dioxide. In this reaction, wood and oxygen are the .
5. Which of the following is an example of a reactant?
Water formed from hydrogen and oxygen
Carbon dioxide released from burning wood
Baking soda and vinegar before they react
Rust formed on iron
6. In the word equation: Iron + Oxygen → Iron Oxide, what is the product?
Iron
Oxygen
Iron Oxide
Iron and Oxygen
7. Write a word equation for the reaction where hydrogen and chlorine combine to form hydrogen chloride.
8. Describe in your own words what a 'chemical reaction' means when you see a word equation.
9. Reactants are always found on the right side of the arrow in a word equation.
True
False
10. The arrow in a word equation indicates that new substances are being formed.
True
False