Grade 9 Chemistry: Word Equations Worksheet
This worksheet focuses on writing and interpreting word equations for chemical reactions, covering reactants, products, and states of matter for Grade 9 Science students.
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Grade 9 Chemistry: Word Equations
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Read each question carefully and provide your answer in the space provided. For word equations, ensure you include the correct reactants, products, and states of matter where specified.
1. In a word equation, what does the arrow (→) represent?
Equals
Reacts to form
Is greater than
Is less than
2. Which of the following is a reactant in a chemical reaction?
The substance formed
The starting substance
The catalyst
The product
3. The substances on the left side of a word equation are called the .
4. The word equation for the reaction of hydrogen gas and oxygen gas to form liquid water is: .
5. Write the word equation for the combustion of methane (CH₄) gas in the presence of oxygen gas to produce carbon dioxide gas and water vapor.
6. Describe the meaning of the symbol "(aq)" when used in a chemical equation.
7. In a word equation, the plus sign (+) on the product side means 'and'.
True
False
8. The chemical reaction: "Solid iron reacts with oxygen gas to produce solid iron (III) oxide" is correctly represented by the word equation: Iron (s) + Oxygen (g) → Iron (III) oxide (s).
True
False
Match the term with its correct definition.
9. Reactant
a. A substance formed in a chemical reaction
10. Product
b. A starting substance in a chemical reaction
11. (g)
c. Represents a gaseous state
12. (aq)
d. Represents an aqueous solution
13. Consider the following word equation: Solid potassium (s) + Liquid water (l) → Aqueous potassium hydroxide (aq) + Hydrogen gas (g) a) Identify the reactants in this chemical reaction.
b) Identify the products in this chemical reaction.
c) What are the states of matter for each reactant and product?