ATI TEAS 7
Chemistry
1. Which of the following is the smallest part of an element that can still be recognized as that element?
- A. Electron
- B. Proton
- C. Neutron
- D. Atom
Correct answer: D
Rationale: An atom is the smallest unit of matter that retains the chemical properties of an element. It is composed of a nucleus containing protons and neutrons, and electrons that orbit the nucleus. The number of protons in the nucleus determines the atomic number of the element, and the number of neutrons determines the isotope of the element.
2. When choosing a color palette for a presentation, it's best to:
- A. Use as many vibrant colors as possible to grab attention.
- B. Stick to a monochrome palette for a minimalist look
- C. Select complementary colors that create harmony and contrast.
- D. Use the same colors as your company logo for consistency.
Correct answer: C
Rationale: While both branding consistency and minimalism have their place, presentations benefit from utilizing complementary colors for visual interest and clarity.
3. Which of the following conditions is characterized by a wasting or decrease in muscle mass?
- A. Hypertrophy
- B. Atrophy
- C. Spasticity
- D. Myopathy
Correct answer: B
Rationale: The correct answer is B: 'Atrophy.' Atrophy is a condition characterized by a wasting or decrease in muscle mass. Hypertrophy (choice A) refers to an increase in muscle size, not a decrease. Spasticity (choice C) is increased muscle tone and reflexes, while myopathy (choice D) is a general term for diseases of the muscle tissue. Understanding these definitions is crucial for distinguishing between different muscle conditions.
4. Cystitis is an inflammation of the:
- A. Kidneys
- B. Bladder
- C. Ureters
- D. Urethra
Correct answer: B
Rationale: The correct answer is B: Bladder. Cystitis is an inflammation of the bladder, typically caused by a bacterial infection. Symptoms include frequent and urgent urination, along with pain or discomfort in the pelvic area. The kidneys (option A) are responsible for filtering blood and producing urine, but they are not the site of inflammation in cystitis. The ureters (option C) are the tubes that connect the kidneys to the bladder and are not typically affected by cystitis. The urethra (option D) is the tube that carries urine from the bladder out of the body, but it is not where the inflammation occurs in cystitis.
5. Which statement accurately describes the relationship between electron configuration and the periodic table?
- A. Elements within the same period have similar electron configurations.
- B. Elements within the same group have similar electron configurations in their outermost shell.
- C. Electron configuration has no influence on an element's position on the periodic table.
- D. The number of electron shells an element has determines its group on the periodic table.
Correct answer: B
Rationale: Elements within the same group have similar electron configurations in their outermost shell. This explains why elements in the same group often share similar chemical properties.
6. What is the relationship between work and energy?
- A. Work is the rate of energy transfer
- B. Work and energy are the same concepts
- C. Work is the result of energy
- D. Work changes an object's energy from one form to another
Correct answer: d
Rationale: Work is the process that changes an object's energy from one form to another or transfers it from one object to another.
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