ATI TEAS 7
Chemistry
1. Which type of reaction is represented by the equation A + B → AB?
- A. Synthesis
- B. Decomposition
- C. Single Replacement
- D. Double Replacement
Correct answer: a
Rationale: Synthesis reactions involve the combination of two or more substances to form a new compound.
2. Rectangle: A picture frame measures 15cm by 20cm. What is its perimeter?
- A. 30cm
- B. 55cm
- C. 65cm
- D. 75cm
Correct answer: C
Rationale: Add the lengths of all sides: perimeter = 2 (length + width) = 2 (15cm + 20cm) = 65cm.
3. Which type of muscle is characterized by voluntary control and is responsible for body movement?
- A. Cardiac muscle
- B. Smooth muscle
- C. Skeletal muscle
- D. Connective tissue
Correct answer: c
Rationale: The correct answer is C: Skeletal muscle. Skeletal muscles are characterized by voluntary control, meaning they are under conscious control, allowing us to move our body parts as desired. These muscles are attached to bones and are responsible for movements such as walking, running, and lifting objects. Cardiac muscle (A) is found in the heart and is involuntary, while smooth muscle (B) is found in internal organs and is also involuntary. Connective tissue (D) provides support and structure to the body but is not responsible for body movements.
4. The final sentence suggests that users should approach social media with a healthy dose of
- A. Enthusiasm and optimism about its potential for connection and engagement.
- B. Skepticism and critical thinking towards the information encountered online.
- C. Acceptance of its flaws and a passive reliance on its features for interaction.
- D. Indifference towards its impacts and an absence of any effort to manage its use.
Correct answer: B
Rationale: The emphasis on "critical thinking" and "skepticism" suggests the importance of approaching social media with a cautious and discerning mind, aligning with B
5. What mineral is essential for muscle function and can cause cramps if deficient?
- A. Sodium
- B. Calcium
- C. Potassium
- D. Magnesium
Correct answer: B
Rationale: The correct answer is B: Calcium. Calcium is essential for muscle function, including muscle contraction and relaxation. A deficiency in calcium can lead to muscle cramps and spasms. While sodium, potassium, and magnesium are also important for muscle function, calcium specifically plays a crucial role in muscle contractions. Therefore, calcium is the mineral that is essential for muscle function and can cause cramps if deficient.
6. When writing dialogue, remember to:
- A. Avoid contractions and informal language for realism.
- B. Use formal vocabulary to sound sophisticated.
- C. Create realistic speech patterns reflecting the characters' personalities.
- D. Focus on descriptive narrative over character interactions.
Correct answer: C
Rationale: Effective dialogue captures the characters' unique voices and personalities through realistic speech patterns and word choices.
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