ATI TEAS 7
Chemistry
1. Which of the following is the smallest unit of matter?
- A. Molecule
 - B. Atom
 - C. Compound
 - D. Element
 
Correct answer: B
Rationale: An atom is the fundamental building block of matter, while molecules are formed by the combination of atoms.
2. Which sentence uses the comparative degree of an adjective correctly?
- A. This movie is good, but the other one is better.
 - B. She is the tallest player on the team.
 - C. He worked hardest than everyone else.
 - D. My coffee is hotter than yours.
 
Correct answer: A
Rationale: Option A uses "better" to compare the quality of two movies.
3. Which element is a critical component of DNA and RNA, essential for storing and transmitting genetic information?
- A. Oxygen
 - B. Carbon
 - C. Nitrogen
 - D. Hydrogen
 
Correct answer: B
Rationale: Carbon's ability to form diverse bonds makes it the backbone of genetic molecules, enabling efficient information storage and transmission
4. Which additional information would be MOST relevant to the passage's argument?
- A. A detailed biography of a historical figure with no analysis of their impact on society.
 - B. A timeline of technological advancements throughout history with no connection to social consequences.
 - C. A case study of how historical knowledge informed the development of a successful solution to a contemporary problem.
 - D. A statistical analysis of economic trends without any reference to historical events or context.
 
Correct answer: C
Rationale: Choice C aligns with the passage's theme by demonstrating how historical knowledge directly impacted a contemporary solution, further supporting the argument for history's value.
5. What is the name for the balanced equation that represents a chemical reaction?
- A. Hypothesis
 - B. Chemical formula
 - C. Balanced equation
 - D. Reaction mechanism
 
Correct answer: C
Rationale: A balanced equation shows the reactants, products, and their stoichiometric coefficients, ensuring equal numbers of atoms of each element on both sides.
6. A rectangular bandage measures 5cm by 8cm. What is the area covered by the bandage?
- A. 10cm
 - B. 13cm
 - C. 40cm^2
 - D. 64cm^2
 
Correct answer: C
Rationale: 40cm^2: Multiply the length (5cm) by the width (8cm).
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