Question 1

Which of the following best describes the definition of matter in chemistry?

Accepted Answer

Anything that has mass and occupies space.

Question 2

A nurse needs to convert a medication dose from milligrams (mg) to grams (g). If the dose is 2500 mg, what is the correct conversion?

Accepted Answer

$$2500 \div 1000 = 2.5 g$$

Question 3

Which of the following is an example of a chemical, according to the definition provided in class?

Accepted Answer

A substance that has the same composition and properties regardless of where you find it.

Question 4

A patient’s fluid balance is calculated as follows: total input (mL) - total output (mL). If a patient has an input of 3200 mL and an output of 2800 mL, what is the fluid balance?

Accepted Answer

$$3200 - 2800 = 400 mL$$

Question 5

Which step in the scientific method involves forming a possible explanation for an observation?

Accepted Answer

Hypothesis

Question 6

Convert 5400 to scientific notation.

Accepted Answer

$$5.4 	imes 10^3$

Question 7

Which of the following is the correct formula to convert Celsius to Fahrenheit?

Accepted Answer

$$F = 1.8(C) + 32$$

Question 8

A silver coin has a mass of 6.407 grams. What is the place value of the digit 7 in this number?

Accepted Answer

Thousandths

Question 9

Which of the following is NOT a reason why health professionals use percentages in medication assessment?

Accepted Answer

To calculate the final grade in a course

Question 10

What is the correct scientific notation for 0.00086?

Accepted Answer

$$8.6 	imes 10$$^{-4}$$

Question 11

A nurse needs to solve the equation $$2x + 8 = 14$$ for $$x. $$What is the value of $$x$$?

Accepted Answer

$$x = 3$$

Question 12

Which of the following is an example of a theory in the context of the scientific method?

Accepted Answer

Scientific studies show that exercising lowers blood pressure.

Question 13

If a medication order requires 15 mg in 5 mL, what is the concentration in mg/mL?

Accepted Answer

$$15 \div 5 = 3 mg/mL$$

Question 14

Which of the following is the correct way to write 87200 in scientific notation?

Accepted Answer

$$8.72 	imes 10^4$

Question 15

Why do scientists use scientific notation when reporting measurements?

Accepted Answer

To make it easier to report extremely large or small measurements and to report the correct number of significant digits.

Question 16

Which of the following is a correct step in solving for an unknown variable in an equation?

Accepted Answer

Isolate the variable you need to solve for.

Question 17

A premature baby has a mass of 2518 grams. What is the place value of the digit 5?

Accepted Answer

Hundreds

Question 18

Which of the following is a real-world application of chemistry in healthcare?

Accepted Answer

Calculating medication dosages using ratios and proportions.

Question 19

What is the correct scientific notation for 0.0000272338?

Accepted Answer

$$2.72338 	imes 10$$^{-5}$$

Question 20

Which of the following is NOT a benefit of using charts and plots in medical practice?

Accepted Answer

They make it harder to understand patient data.

CH107: Chemistry in Our Lives – Study Notes (Chapter 1 & Math Skills)

Guida di studio - Domande di pratica

Study guide - Flashcard