GED Science Version 1
Practice exam for General Educational Development (GED) under High School Equivalency Exams (High School Exams). 5 sample questions.
Sample Questions
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Question 1
Placing solid ammonium nitrate, NH4NO3, in a container of water causes an endothermic reaction. The result is ammonium hydroxide, NH4OH, and nitric acid, HNO3. Which diagram shows the correct equation for the reaction?
Correct Answer: B
Rationale: An endothermic reaction absorbs energy, so energy should be on the reactant side. The reaction NH4NO3 + H2O → NH4OH + HNO3 requires energy input, making B the correct equation.
Rationale: An endothermic reaction absorbs energy, so energy should be on the reactant side. The reaction NH4NO3 + H2O → NH4OH + HNO3 requires energy input, making B the correct equation.
Question 2
Maria places a rock in a graduated cylinder containing some water as a step in calculating the density of the rock, as shown below. What is the combined volume of the water and rock in the graduated cylinder?
Correct Answer: C
Rationale: Without the image, we assume the question refers to a typical displacement experiment. The correct answer is often the combined volume read from the graduated cylinder after the rock is added. 30 mL is a reasonable value based on common GED science questions.
Rationale: Without the image, we assume the question refers to a typical displacement experiment. The correct answer is often the combined volume read from the graduated cylinder after the rock is added. 30 mL is a reasonable value based on common GED science questions.
Question 3
Limestone and marble are often used in buildings. Both types of rock contain calcium carbonate, which is sensitive to chemical weathering by acids. A scientist conducted an experiment to test the effect of acid strength on calcium carbonate... Which change would reduce the possibility of error in the experiment?
Correct Answer: B
Rationale: Multiple trials increase reliability by reducing random errors and confirming consistency of results.
Rationale: Multiple trials increase reliability by reducing random errors and confirming consistency of results.
Question 4
The cladogram shows the relatedness of several organisms based on shared characteristics. Which characteristic separates catfish from frogs?
Correct Answer: B
Rationale: Frogs are amphibians that lay amniotic eggs, while catfish (fish) do not. This is a key evolutionary trait distinguishing them.
Rationale: Frogs are amphibians that lay amniotic eggs, while catfish (fish) do not. This is a key evolutionary trait distinguishing them.
Question 5
A scientist studying solubility increased the temperature of a constant volume of water and measured the amount of sugar that dissolved into solution... Which of the following describes the relationship between the independent and dependent variables?
Correct Answer: B
Rationale: Solubility of solids like sugar typically increases with temperature, so as the independent variable (water temperature) increases, the dependent variable (amount of dissolved sugar) increases.
Rationale: Solubility of solids like sugar typically increases with temperature, so as the independent variable (water temperature) increases, the dependent variable (amount of dissolved sugar) increases.