Lesson Worksheet: Reaction Equations Chemistry • 7th Grade
In this worksheet, we will practice constructing equations for chemical reactions and writing them using words or chemical symbols.
Q1:
What is the meaning of the arrow in a chemical reaction equation?
- ABecomes
- BIs like
- CCannot become
- DIs the same as
- EIs made of
Q2:
In which part of a chemical reaction equation are the reactants of the reaction written?
- ABelow the arrow
- BAbove the arrow
- CTo the left of the arrow
- DTo the right of the arrow
Q3:
In which part of a chemical reaction equation are the products of the reaction written?
- AAbove the arrow
- BTo the right of the arrow
- CBelow the arrow
- DTo the left of the arrow
Q4:
Hydrogen gas can be produced by reacting zinc with sulfuric acid. This reaction also produces zinc sulfate. Which of the following symbol equations shows this chemical reaction?
- A
- B
- C
- D
- E
Q5:
An experiment shows that hydrogen peroxide decomposes to form water and oxygen gas. Which of the following word equations describes the chemical reaction that has occurred in this experiment?
- A
- B
- C
- D
- E
Q6:
Pick the statement that describes the chemical reaction shown in the following symbolic equation:
- AMethane burns in carbon dioxide to produce oxygen and water.
- BMethane decomposes under heat to produce oxygen, carbon dioxide, and water.
- CCarbon dioxide reacts with water to produce methane and oxygen.
- DOxygen reacts with water to produce methane and carbon dioxide.
- EMethane burns in oxygen to produce carbon dioxide and water.
Q7:
The formation of ammonia from nitrogen and hydrogen is a reversible reaction. What is the full symbol equation (including state symbols) for this chemical reaction?
- A
- B
- C
- D
- E
Q8:
When aqueous silver nitrate is mixed with aqueous sodium chloride, a white solid precipitate of silver chloride is produced. The symbol equation for this reaction is shown below: What state symbols should be added to each compound to complete the equation?
- Aaq, s, l, aq
- Bl, l, s, aq
- Cs, aq, aq, aq
- Ds, s, g, aq
- Eaq, aq, s, aq
Q9:
In the process of photosynthesis, carbon dioxide and water react together, in the presence of sunlight, to produce glucose and oxygen. Which of the following word equations describes this chemical reaction?
- ACarbon dioxide + water glucose + oxygen
- BOxygen + carbon dioxide water + glucose
- COxygen + water + carbon dioxide glucose
- DWater + glucose oxygen + carbon dioxide
- EOxygen + glucose water + carbon dioxide
Q10:
The symbol equation for the decomposition of iron(II) sulfate is given below:
What is the reactant in this chemical reaction?
- A
- B
- C
- D
- E
Practice Means Progress
Boost your grades with free daily practice questions. Download Nagwa Practice today!
